Awareness and willingness to accept syphilis chemoprophylaxis among men who have sex with men from three cities in China: a cross-sectional study. - Zhang, Xu; Qi, Shu-Zhen; Du, Fang-Zhi; Zheng, Zhi-Ju; Cao, Ning-Xiao; Zheng, Xiao-Li; Zhang, Rui-Li; Wang, Qian-Qiu (BMC Public Health, 2022)