Objective:To study the capability of defending against sexual assault of mental retarded women.Method:Fifty rape cases of women judged incapable of defending against sexual assault for mental retardation were compared with fifty cases without intelligent impairment by self-developed questionnaire.Result:The two situations were different in age of the perpetrators, motivation of rape, acquaintance with the perpetrator, time and location of the rape, number of times being raped, and victim's reaction during and after rape.Conclusion:Mental retarded women need more protection in prevention of rape.

Objective To explore the epidemiological and clinical feature of hepatitis B virus and hepatitis C virus (HBV/HCV) co-infection in Guangzhou area,and provide evidence to elevate the diagnoses and treatment for the co-infection.Methods Data of patients with chronic HBV infection seen from April 2005 to October 2011 were retrospectively collected,and the epidemiological features of HBV/ HCV co-infection were analyzed.Patients with HBV/HCV co-infection were stratified according to the HBeAg status and the levels of HBV DNA and HCV RNA,and their clinical feature were analyzed.Results The prevalence of HBV/HCV co-infection was 1.9％ (128/6604),which was mainly seen in middle age of male populations with history of drug addiction.There were no significant differences in biochemical markers and percentage of end-stage liver disease between HBeAg positive and HBeAg negative co-infection patients.The HBV DNA positive rate in HBeAg positive patients was higher than those in HBeAg negative patients (P ＜ 0.001),while the HCV RNA positive rate was lower than those in HBeAg negative patients (P =0.007).The frequency of end-stage liver disease in HBV DNA positive patients was higher than that in HBV DNA negative patients (58.1％ vs.37.9％,P =0.027),but it was similar between HCV RNA positive and negative patients (43.6％ vs.49.2％,P =0.540).Conclusions The prevalence of HBV/ HCV co-infection in Guangzhou area in low,and the levels of HBV DNA may associate with progression of disease.