[1]Southern Med Univ, Nanfang Hosp, Guangzhou, Guangdong, Peoples R China;
[2]Xiamen Univ, Sch Publ Hlth, Xiamen, Peoples R China;
[3]Ruijin Hosp, Shanghai, Peoples R China;
[4]Cent S Univ, Xiangya Hosp, Changsha, Hunan, Peoples R China;
[5]Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Wuhan 430074, Peoples R China;
[6]Jilin Univ, Hosp 1, Changchun 130023, Peoples R China;
[7]Tangdu Hosp, Xian, Peoples R China;
[8]Jinan Infect Dis Hosp, Jinan, Peoples R China;
[9]Beijing Ditan Hosp, Beijing, Peoples R China;
[10]Peking Univ, Hosp 1, Beijing 100871, Peoples R China;
[11]Peking Univ, Peoples Hosp, Beijing 100871, Peoples R China;
[12]8th Peoples Hosp, Guangzhou, Guangdong, Peoples R China;
[13]Fudan Univ, Huashan Hosp, Shanghai 200433, Peoples R China;
[14]Changhai Hosp, Shanghai, Peoples R China;
[15]Beijing Youan Hosp, Beijing, Peoples R China;
[16]West China Hosp, Chengdu, Peoples R China;
[17]Zhejiang Univ, Affiliated Hosp 1, Hangzhou 310003, Zhejiang, Peoples R China;
[18]China Med Univ, Shengjing Hosp, Shenyang, Peoples R China;
[19]6th Peoples Hosp, Hangzhou, Zhejiang, Peoples R China;
[20]Chongqing Med Univ, Affiliated Hosp 2, Chongqing, Peoples R China;
[21]81st PLA Hosp, Nanjing, Jiangsu, Peoples R China;
[22]302nd PLA Hosp, Beijing, Peoples R China;
[23]Sun Yat Sen Univ, Affiliated Hosp 3, Guangzhou 510275, Guangdong, Peoples R China;
[24]85th PLA Hosp, Shanghai, Peoples R China;
[25]Capital Med Univ, Beijing Friendship Hosp, Beijing, Peoples R China