PetroChina Central Hospital, Langfang, Hebei, China
Anhui Provincial Hospital, Hefei, Anhui, China
Hunan Provincial Center for Disease Control And Prevention, Changsha, Hunan, China
Guanyun Country CDC, Nanjing, Jiangsu, China
Al Kuwait Hospital (Al Baraha Hospital), Dubai, United Arab Emirates
Al Kuwait Hospital (Al Baraha Hospital), Dubai, United Arab Emirates
Guanyun Country CDC, Nanjing, Jiangsu, China
SCT study site, Lima, Peru
307 Hospital of PLA, Beijing, Beijing, China