1.Analysis of related factors for preschool children s safety seat use in a district of Beijing
HU Jiangong, ZHAO Yingying, HE Chao, YOU Kai,PENG Tao
Chinese Journal of School Health 2026;47(1):42-45
Objective:
To understand the allocation and use of safety seats for preschool children and explore its related factors, so as to provide a scientific reference for promoting the usage of safety seats.
Methods:
A stratified random cluster sampling method was used to select 3 143 parents of preschool children aged 3 to 6 from six kindergartens in Shunyi District, Beijing from January 3 to 10, 2022. An online questionnaire survey was conducted to collect and evaluate the equipment and use of child safety seats in different characteristics of preschool children, as well as their scores of health beliefs. Multiple factor Logistic regression analysis was used to investigated the related factors of safety seat configuration and use.
Results:
The equipping rate and usage rate of safety seats for preschool children were 66.56% and 58.45%, respectively. The proportion of equipped and used safety seats for preschool children in core families (69.52%, 62.23%) were higher than that in large families (64.35%, 55.62%), only child families ( 72.39 %, 64.87%) were higher than non only child families (61.49%, 52.86%), and urban families (71.63%, 63.04%) were higher than rural families (52.31%, 45.51%) ( χ 2=9.23, 13.86; 41.72, 46.44; 101.96 ,76.97,all P <0.05) . As the educational level of parents ( χ 2 trend =154.23,98.76) and annual income of the family ( χ 2 trend =155.78,127.69) rised, the reporting rates of the equipped and used child safety seats in the family also increased(all P <0.05 ). There were statistically significant differences in the scores of different dimensions of health beliefs for the provision ( t =-20.22-18.16) and use ( t =24.32-24.17) of safety seats for preschool children(all P <0.05). After adjusting for child sex, child age, family annual income, parental education level, family type, whether the child was an only child, and place of residence,multivariate Logistic regression analysis showed that preschool children with higher perceived susceptibility score( OR =1.11, 1.08), higher self efficacy score( OR =1.23, 1.33), and higher suggestive factors score( OR =1.08, 1.12) were more likely to have and use safety seats in their families, while preschool children with higher perceived impairments score( OR =0.82, 0.80) were less likely to have and use safety seats in their families (all P <0.05).
Conclusions
The installation rate of child safety seats needs to be improved, and there is also a certain gap in their use after installation. Parents of preschool children should improve susceptibility and self efficacy to safety seat equipment and use, and perceptual barriers should be reduced.
2.Analysis of related factors of radiation pneumonitis in breast cancer patients after radiotherapy
Chuou YIN ; Miao HE ; Yingying HE ; Jiang LIU ; Juan DENG ; Guojian MEI ; Hao CHENG
Chinese Journal of Radiation Oncology 2025;34(12):1208-1214
Objective:To explore the related factors and independent risk factors of radiation pneumonitis (RP) in breast cancer patients after radiotherapy, and to guide the optimization of treatment plan for BC and reduce the incidence of RP.Methods:A retrospective analysis was conducted on 770 female breast cancer patients who received postoperative radiotherapy at Deyang People's Hospital between July 2021 and September 2024. The occurrence of RP was observed, and potential clinical and dosimetric factors were analyzed. Continuous variables were assessed using the t-test, categorical variables with the chi-square test, and univariate analysis was used to identify factors associated with RP. Multivariate logistic regression analysis was used to find out the independent risk factors of RP, and receiver operating characteristic (ROC) curves were used to evaluate the predictive value of each factor. Results:Among 770 patients, 46 developed RP (34 grade 1, 12 grade 2). Univariate analysis showed that surgical method, chemotherapy regimen, interval between chemotherapy and radiotherapy, age, planning target volume, and maximum dose of the ipsilateral lung were not associated with RP (all P>0.05). Clinical stage ( χ2=7.84, P=0.020), chest wall + supraclavicular + internal mammary lymph node irradiation ( χ2=104.50, P<0.001), supraclavicular + internal mammary lymph node irradiation ( χ2=8.90, P=0.003), number of chemotherapy cycles ( t=9.88, P<0.001), and ipsilateral lung V 5 Gy( t=16.47, P<0.001), V 10 Gy( t=18.70, P<0.001), V 15 Gy( t=20.23, P<0.001), V 20 Gy( t=23.39, P<0.001), V 25 Gy( t=21.68, P<0.001), V 30 Gy( t=21.67, P<0.001), V 35 Gy( t=20.67, P<0.001), V 40 Gy( t=19.96, P<0.001), V 45 Gy( t=18.59, P<0.001), V 50 Gy( t=11.69, P<0.001), D mean( t=30.76, P<0.001) were significantly correlated with the occurrence of RP. Multivariate analysis revealed that ipsilateral lung V 5 Gy ( OR=1.258, 95% CI: 1.143-1.384, P<0.001), number of chemotherapy cycles ( OR=2.767, 95% CI: 1.781-4.299, P<0.001), and chest wall + supraclavicular + internal mammary lymph node irradiation ( OR=7.926, 95% CI: 2.943-21.349, P<0.001) were independent risk factors for RP. Using V 5 Gy=51.65% as the diagnostic cutoff, the sensitivity and specificity for predicting RP were 0.870 and 0.804, respectively. Taking the number of chemotherapy cycles=6.50 as the cutoff, the sensitivity and specificity of predicting RP were 0.891 and 0.586, respectively. Taking 0.50 as the diagnostic cutoff point, the sensitivity and specificity of chest wall + supraclavicular + internal mammary lymph node irradiation for RP were 0.870 and 0.797, respectively. Conclusions:The number of chemotherapy cycles, ipsilateral lung V 5 Gy, and chest wall + supraclavicular + internal mammary lymph node irradiation are independent risk factors for RP in postoperative female breast cancer patients.
3.Correlation between fetal biacromial diameter estimated by ultrasound and shoulder dystocia
Fuqiang ZHOU ; Yating YANG ; Liang LIANG ; Zhansen E ; Jinhua CHEN ; Xuesen HE ; Yingying CAI ; Yuqing LIU
Chinese Journal of Medical Physics 2025;42(3):369-373
Objective To verify the accuracy of Youssef's formula and evaluate whether fetal biacromial diameter(BA)and other fetal biological diameters estimated by ultrasound can be used to predict macrosomia and shoulder dystocia,so as to provide the possibility for clinical prediction of shoulder dystocia.Methods A total of 200 pregnant women with a gestational period of 37-42 weeks were examined with ultrasound within 3 days before delivery for collecting biparietal diameter(BPD),head circumference(HC),abdominal circumference(AC),humerus length(HL),femur length(FL),thoracic transverse diameter and midpoint diameter of upper arm;and the fetal BA was estimated by Youssef's formula.Neonatal BA,body mass and body length were measured within 1 day after delivery.The above data were analyzed for correlation.Newborns were grouped according to their body mass(macrosomia vs non-macrosomia)and whether they had shoulder dystocia or not(shoulder dystocia vs non-shoulder dystocia).Results(1)The fetal BA estimated by Youssef's formula was consistent with neonatal BA(P>0.05),and the estimated BA was positively correlated with BPD,HC,AC and neonatal body mass(P<0.001).(2)The BA,BA/AC and BA/HC in macrosomia group were different from those in non-macrosomia group(P<0.05).ROC curve showed that the sensitivity and specificity were 92.3%and 88.2%for macrosomia prediction when the estimated BA threshold was 16.05 cm,and those were 61.5%and 77.0%when BA/AC threshold was 0.455,and 76.9%and 72.7%when BA/HC threshold was 0.465.(3)Shoulder dystocia group had neonatal weight close to non-shoulder dystocia group(P>0.05),but higher BA/BPD,BA/HC and BA-BPD(P<0.05).ROC curve showed that the sensitivity and specificity were 100.0%and 66.8%for shoulder dystocia when BA threshold was 15.45 cm,100.0%and 80.6%when BA/BPD threshold was 1.695,100.0%and 81.6%when BA/HC threshold was 0.475,and 100.0%and 76.0%when the threshold difference between BA and BPD was 6.35 cm.Conclusion Fetal BA,BA/BPD,BA/HC,BA/AC and BA-BPD may be effective predictors of shoulder dystocia and macrosomia.
4.Guide on Methodological Standards in Pharmacoepidemiology in China(2nd edition)and their series interpretation(4):sources of research question and study protocol development in pharmacoepidemiological research
Yinchu CHENG ; Na HE ; Yingying YAN ; Siyan ZHAN ; Feng SUN
Chinese Journal of Pharmacoepidemiology 2025;34(4):365-372
Formulating a well-defined research question and developing a scientifically sound study protocol is important for ensuring the quality of pharmacoepidemiological research.Based on the Guide on Methodological Standards in Pharmacoepidemiology in China(2nd edition),this research provided an interpretation of the sections related to the formulation of research questions and the development of study protocols.First,it clarified the sources and scope of research questions,outlining a two-step approach—question generation and definition—and introduces relevant evaluation tools and defining frameworks.Furthermore,it systematically explained the key elements of a study protocol and provides an in-depth explanation of the research methodology and its critical aspects.Finally,the paper highlighted the importance of feasibility assessment,emphasizing that the process of defining research questions and study protocols is dynamic and iterative.Compared with the previous edition,the 2nd edition of the guidelines offers more detailed and updated guidance on question formulation and protocol development.It added three new elements—such as protocol archiving or registration—and three new content items,including study objectives.The 2nd edition also expanded the methodological framework and strengthens feasibility assessments,thereby enhancing the comprehensiveness and rigor of its practical guidance.By integrating guideline content with practical experience,this paper provided insights into its implications for pharmacoepidemiological research and serves as a reference for researchers in the field.
5.Preparation and evaluation of folic acid-modified liposomal vaccines based on natural IgM adjuvant
Anze LIU ; Yingying HE ; Huan WANG ; Ying LU
Journal of Pharmaceutical Practice and Service 2025;43(11):555-559
Objective To increase the antigen presentation and immune response of liposomal vaccines through IgM functionalization strategy. Methods Folic acid-modified liposomes loaded with ovalbumin (FA-sLip/OVA) were prepared. The binding ability of liposomal vaccines with IgM was investigated by ELISA method. The IgM in the protein corona was analyzed by SDS-PAGE and Western Blot. Mice were immunized by intravenous injection to investigate the spleen B cell targeting and immune activation of vaccines. Results The average particle size of FA-sLip/OVA was about 117 nm. The specific binding between FA-sLip and IgM was verified by ELISA method. Folic acid-modified liposomal vaccines could absorb IgM in mouse serum and form protein coronas on the surface. Intravenous immunization could stimulate mice to produce long-lasting, high-level antibody titers. Conclusion Natural IgM-enabled folic acid-modified liposomal vaccines were successfully prepared which could effectively induce immune response and provide a new idea for the research of nano-vaccines.
6.Application of machine learning models in predicting renal function decline following robot-assisted partial nephrectomy
Jing LI ; Linfeng WANG ; Gaojie ZHANG ; Yong HUANG ; Yingying GAO ; Rui SUN ; Yang CAO ; Qiuchen LI ; Hao HE ; Ziling WEI ; Jiayu LIU
Journal of Chongqing Medical University 2025;50(4):457-462
Objective:To compare the efficacy of various machine learning models in predicting renal function decline after robot-assisted partial nephrectomy(RAPN),and to provide evidence for clinical risk stratification.Methods:This study retrospectively in-cluded the clinical data of 733 patients with renal cell carcinoma undergoing RAPN at the Urology Department of The First Affiliated Hospital of Chongqing Medical University from January 2019 to December 2023.Demographic characteristics,laboratory indicators,and perioperative parameters were integrated to construct seven machine learning models.Key predictors were interpreted using Shap-ley additive explanations(SHAP).Model performance was evaluated using the area under the receiver operating characteristic curve(AUC).Results:The random forest model demonstrated the best predictive performance(AUC=0.84).SHAP analysis identified neutrophil-to-lymphocyte ratio,tumor diameter,the international normalized ratio of prothrombin time,white blood cell count,and in-traoperative blood loss as significant factors influencing postoperative renal function decline.Conclusion:This study provides a poten-tial predictive tool for clinical practice,aiding in identifying high-risk patients and optimizing postoperative management strategies.
7.Prevalence and risk factors of olfactory dysfunction among the elderly in China:a populational based study
Shuting YU ; Wenwen DIAO ; Xiaoli ZHU ; Huijing HE ; Yaoda HU ; Guangliang SHAN ; Xingming CHEN ; Yingying ZHU
Chinese Archives of Otolaryngology-Head and Neck Surgery 2025;32(9):570-574
OBJECTIVE Aimd to investigate the prevalence of olfactory dysfunction among healthy elderly individuals in China using a large sample size and to explore its correlations with demographic and other factors.METHODS A total of 5 258 participants who aged 60 and above underwent the T&T olfactometer test and completed questionnaires.The prevalence of olfactory dysfunction was reported,and logistic regression analyses were performed to assess the associations between olfactory dysfunction and other factors.RESULTS The overall prevalence of olfactory dysfunction in the study was 26.5%.Independent risk factors for olfactory dysfunction included advanced age,rural residence(OR=1.88,95%CI:1.60-2.22,P<0.01),current smoking(OR=1.45,95%CI:1.15-1.83,P<0.01),and self-reported olfactory dysfunction(OR=10.12,95%CI:8.44-12.14,P<0.01).In contrast,female gender(OR=0.70,95%CI:0.58-0.85,P<0.01)and high educational attainment were independently associated with a lower prevalence of olfactory dysfunction.CONCLUSION The prevalence of olfactory dysfunction among individuals aged 60 and above increased with age.Male gender,rural residence,low educational attainment,current smoking,and self-reported decline in olfactory function were independently associated with olfactory dysfunction.
8.Exploration of the application of vehicle-mounted 5G remote mobile robotic surgical system in thyroid surgery
Meng WANG ; Wen TIAN ; Qingqing HE ; Guolou LI ; Jian ZHU ; Xiaodong MA ; Wei WEI ; Qiongqiong TAN ; Jinzhi HU ; Yingying WANG ; Peng ZHOU ; Gang WANG ; Yixin LIU ; Hejun WANG ; Yu LIU ; Lihu LIU
International Journal of Surgery 2025;52(1):28-32
Objective:To investigate the feasibility and safety of implementing a domestic vehicle-mounted remote mobile robotic surgical system in thyroid surgery applications, integrated with 5G communication technology.Methods:Using the main system located on the vehicle-mounted mobile robot operating platform of the 960th Hospital of PLA Joint Logistics Support Force and the slave system of Weifang Traditional Chinese Hospital, the remote radical thyroidectomy 5G communication technology, and analyze the clinical and information transmission data of two female patients who underwent remote mobile robot thyroid cancer surgery on October 21, 2024 at Weifang Traditional Chinese Medicine Hospital.Results:The remote radical thyroidectomy was conducted by the robosurgeons utilizing a vehicle-mounted mobile robotic surgical system, and the procedure was successfully completed without necessitating intermediate open surgery. The operation durations for patient 1 and patient 2 were 135 minutes and 108 minutes, respectively, with 7 and 13 lymph nodes dissected, respectively. The average delay in surgical data transmission was recorded at 61.9 milliseconds, with no instances of signal interruption or frame loss. The procedure proceeded smoothly, without any jamming, and the audio and video transmissions were consistently clear. Follow up for 21 days after surgery showed no complications such as hoarseness, skin damage, or lymphatic fistula.Conclusion:The implementation of a vehicle-mounted remote mobile robotic surgery system for thyroid surgery has demonstrated safety and feasibility. Furthermore, the utilization of the 5G network offers rapid data transmission and minimal latency, closely approximating the therapeutic efficacy of traditional robotic thyroidectomy.
9.Efficacy and mechanism of botulinum toxin type A combined with static progressive stretching in the treatment of traumatic knee stiffness in rats
Ke CHEN ; Xin ZHANG ; Kai REN ; Yingying LIAO ; Xin HE ; Xiaoju LI
Chinese Journal of Trauma 2025;41(2):201-211
Objective:To investigate the efficacy and mechanism of botulinum toxin type A (BTX-A) combined with static progressive stretching (SPS) in the treatment of traumatic knee stiffness in rats.Methods:Forty healthy male SD rats aged 8 weeks and weighing 220-300 g, were randomly divided into blank control group ( n=8) and model groups ( n=28) (including injury group, BTX-A group, SPS group and BTX-A+SPS group, with 7 in each group). Hlidebrand′s method was used to construct a traumatic knee stiffness model, with the following main steps: destruction of the joint capsule, Kirschner wire fixation, joint drilling, and removal of the internal fixation at 4 weeks. The blank control group did not receive any treatment and could move freely in the cage. The injury group moved freely after successful modeling. On the day of internal fixation removal, BTX-A was injected into the joint cavity in group BTX-A, SPS treatment was started in the SPS group, BTX-A was injected into the joint cavity and SPS treatment was started in the BTX-A+SPS group. The treatments lasted 16 days. The range of motion (ROM) and joint stiffness were measured before treatment and at 16 days after treatment. At 16 days after treatment, knee joint tissue was collected and the rats were sacrificed, and the articular capsule fibrous tissue proliferation was observed by HE and Masson staining. The expression levels of phosphorylated (p)-Smad2, Smad2, p-Smad3, Smad3, Smad4, transforming growth factor-β1 (TGF-β1), collagen type I, collagen type III, and α-smooth actin (α-SMA) were determined by Western blot. The ratio of phosphorylated protein to total protein was calculated to reflect the phosphorylation level. Results:(1) ROM: Before treatment, the ROM in the blank control group was significantly higher than that in the other groups ( P<0.05), with no significant difference in ROM among the other groups ( P>0.05). At 16 days after treatment, ROM in the injury group, BTX-A group, SPS group, and BTX-A+SPS group was lower than that in the blank control group ( P<0.05), among which ROM in the BTX-A+SPS group was significantly higher than that in the injury group, BTX-A group, and SPS group ( P<0.05). At 16 days after treatment, there was no significant difference in ROM before and after treatment in the blank control group ( P>0.05), and ROM in the other groups was significantly increased compared with that before treatment ( P<0.01). (2) Joint stiffness: At 16 days after treatment, the joint stiffness levels in the injury group, the BTX-A group, and the SPS group were (0.95±0.24)N·cm/°, (0.86±0.22)N·cm/°, and (0.65±0.09)N·cm/° respectively, which were significantly lower than (0.36±0.03)N·cm/° in the blank control group ( P<0.05). The joint stiffness level of the BTX-A+SPS group was (0.49±0.04)N·cm/°, which was not significantly different from that in the blank control group ( P>0.05), but was significantly lower than those in the injury group, BTX-A group, and SPS group ( P<0.05). (3) Fibrous tissue proliferation: at 16 days after treatment, the joint capsular structure in the blank control group was complete and clear, the fibers were arranged in order, and there was no obvious fibrous tissue proliferation. The pathological changes in the injury group were the most serious, with a large number of synovial fibrous tissue proliferation, significantly increased blood vessels in the tissue, and inflammatory cell infiltration. Compared with the SPS group and BTX-A group, the lesions in BTX-A+SPS group were milder, with only slight increase in the number of synovial cells but no obvious vascular proliferation or lymphocytes, and the overall lesions were the least severe. (4) Protein expression: the ratios of p-Smad2/Smad2 in the injury group, BTX-A group and SPS group were 1.552±0.234, 1.328±0.272 and 1.194±0.277 respectively, which were higher than 0.794±0.082 in the blank control group ( P<0.05). The ratio of p-Smad2/Smad2 in the BTX-A+SPS group was 1.013±0.123, which was not significantly different from those in the blank control group, BTX-A group or SPS group ( P>0.05), but was lower than that in the injury group ( P<0.05). At 16 days after treatment, the p-Smad3/Smad3 ratios in the injury group, BTX-A group, SPS group and BTX-A+SPS group were 2.272±0.309, 1.664±0.285, 1.381±0.276 and 1.003±0.060 respectively, which were higher than 0.515±0.051 in the blank control group ( P<0.05). The p-Smad3/Smad3 ratio in the BTX-A+SPS group was significantly lower than those in the injury group, BTX-A group and SPS group ( P<0.05). At 16 days after treatment, the level of Smad4 in the injury group (1.001±0.015) was higher than 0.294±0.076 in the blank control group ( P<0.05). However, there was no significant difference between the BTX-A group (0.664±0.051), SPS group (0.833±0.045), BTX-A+SPS group (0.467±0.068) or the blank control group ( P>0.05). The level of Smad4 in the BTX-A+SPS group was significantly lower than those in the injury group, BTX-A group and SPS group ( P<0.05). At 16 days after treatment, the level of TGF-β1 in the injury group (1.004±0.407) was higher than 0.269±0.122 in the blank control group ( P<0.05), while there was no significant difference between the BTX-A group (0.564±0.194), SPS group (0.422±0.086) and BTX-A+SPS group (0.347±0.161) and the blank control group ( P>0.05). The level of TGF-β1 in the BTX-A+SPS group was significantly lower than those in the injury group, BTX-A group and SPS group ( P<0.05). At 16 days after treatment, the level of type I collagen in the injury group was 0.999±0.170, higher than 0.299±0.139 in the blank control group ( P<0.05), while there was no significant difference between the BTX-A group (0.542±0.278), SPS group (0.561±0.165), and BTX-A+SPS group (0.537±0.045) and the blank control group ( P>0.05). The level of collagen type I in the BTX-A+SPS group was significantly lower than those in the injury group, BTX-A group, and SPS group ( P<0.05). At 16 days after treatment, the level of type III collagen in the injury group was 1.002±0.126, higher than 0.239±0.106 in the blank control group ( P<0.05), while there was no significant difference between the BTX-A group (0.661±0.062), SPS group (0.595±0.062), and BTX-A+SPS group (0.504±0.269) and the blank control group ( P>0.05). The level of collagen type III in the BTX-A+SPS group was significantly lower than those in the injury group, BTX-A group, and SPS group ( P<0.05). At 16 days after treatment, the level of α-SMA in the injury group was 0.998±0.074, higher than 0.130±0.023 in the blank control group ( P<0.05), while there was no significant difference between the BTX-A group (0.358±0.060), SPS group (0.432±0.230), and BTX-A+SPS group (0.293±0.135) and the blank control group ( P>0.05). The level of α-SMA in the BTX-A+SPS group was significantly lower than those in the injury group, BTX-A group and SPS group ( P<0.05). Conclusions:Compared with single treatment, the combination of BTX-A and SPS demonstrates significantly greater efficacy in the treatment of traumatic knee stiffness in rats. This combined approach not only enhances joint mobility and elasticity but also effectively inhibits joint capsule fibrosis. The underlying mechanism may involve the further suppression of TGF-β1 expression in the joint capsule, leading to reduced phosphorylation levels of Smad2 and Smad3. This, in turn, inhibits the binding of Smad2 and Smad3 to the Smad4 receptor, ultimately downregulating the expression of the downstream proteins of the TGF-β/Smad signaling pathway, such as collagen type I, collagen type III and α-SMA.
10.Sero-conversion rate of HIV antibody and influencing factors in cross-border couples in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan Province, 2017-2023
Qunbo ZHOU ; Xiaohan LI ; Lin LI ; Yuecheng YANG ; Lifen XIANG ; Renhai TANG ; Runhua YE ; Jibao WANG ; Yan HOU ; Ximei XIE ; Suoju XU ; Longqin WANG ; Ying LIU ; Yingying DING ; Na HE ; Song DUAN
Chinese Journal of Epidemiology 2025;46(3):455-461
Objective:To investigate the sero-conversion rate of HIV antibody and influencing factors in cross-border couples in Dehong Dai and Jingpo Autonomous Prefecture(Dehong).Methods:A cohort design was used to recruit HIV-negative people in cross-border couples in Dehong in 2017. Follow-up was conducted in 2023, and questionnaire survey and HIV test were carried out to calculate the sero-conversion rate of HIV antibody. Univariate and multivariate logistic regression models were used to analyze the influence factors for HIV infections.Results:A total of 36 278 HIV-negative persons in cross-border couples were included in the 2017 baseline survey, of whom 22 438 (61.9%) were tested in follow-up in 2023. The sero-conversion rate between 2017 and 2023 was 0.51% (115/22 438). Multivariate logistic regression analysis showed that length of marriage <6 years, Jingpo ethnic group, education level of primary school or below, drug use, illegal marriage and HIV infected spouse were the risk factors of HIV infection in male spouses, and length of marriage <6 years, Jingpo ethnic group, illegal marriage and HIV infected spouse were the risk factors in female spouses.Conclusions:The sero-conversion rate of HIV antibody in cross-border couples in Dehong was relatively high. HIV infection was mainly caused by secondary transmission in the couples, and men might also be infected through drug use. It is necessary to strengthen the registration and management of cross-border couples, especially the couples with discordant HIV infection status, and the intervention in drug users to reduce the risk for secondary transmission of HIV in the cross-border couples.


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