1.Prevalence of Tuberculosis among Close Contacts of Index Cases in 27 Universities in Beijing, China, 2017-2018.

Fei ZHAO ; Zhi Guo ZHANG ; Shu Bo MA ; Zhen YANG ; Yan Ping HE ; Lu Qin WANG ; Philip OWITI ; Chao MA ; Tao LI ; Xin DU ; Can You ZHANG ; Jun CHENG ; Li Xia WANG ; Guang Xue HE ; Hui ZHANG ; Ke Xin LI

Biomedical and Environmental Sciences 2020;33(10):780-784