| Authors: |
Liu R; Division of Epidemiology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China., Li P; Division of Epidemiology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China., Ge L; Division of Epidemiology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China., Liao M; Shandong Center for Disease Control and Prevention, Jinan, China., Song X; Qingdao Center for Disease Control and Prevention, Qingdao, China., Fu Y; Qingdao Center for Disease Control and Prevention, Qingdao, China., Tang H; Division of Epidemiology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China., Li D; Division of Epidemiology, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China. lidongmin@chinaaids.cn. |