[1] Tianjin Med Univ, Dept Resp Dis, Gen Hosp, Tianjin 300052, Peoples R China
[2] Peking Univ, Peoples Hosp, Dept Resp Dis, Beijing 100044, Peoples R China
[3] Nanjing Med Univ, Affiliated Hosp 1, Dept Resp Dis, Nanjing 210029, Jiangsu, Peoples R China
[4] Sichuan Univ, W China Hosp, Dept Resp Dis, Chengdu 610041, Sichuan, Peoples R China
[5] Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Dept Resp Dis, Shanghai 200025, Peoples R China
[6] China Med Univ, Affiliated Hosp 1, Dept Resp Dis, Shenyang 110001, Liaoning, Peoples R China
[7] Peking Univ, Hosp 1, Dept Resp Dis, Beijing 100034, Peoples R China
[8] Peking Univ, Hosp 3, Dept Resp Dis, Beijing 100191, Peoples R China
[9] Henan Prov Peoples Hosp, Dept Resp Dis, Zhengzhou 450003, Henan, Peoples R China
[10] Shanxi Med Univ, Affiliated Hosp 2, Dept Resp Dis, Taiyuan 030001, Shanxi, Peoples R China
[11] Fujian Med Univ, Affiliated Hosp 1, Dept Resp Dis, Fuzhou 350005, Fujian, Peoples R China
[12] Huazhong Univ Sci & Technol, Tongji Med Coll, Union Hosp, Dept Resp Dis, Wuhan 430022, Hubei, Peoples R China
[13] Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Dept Resp Dis, Wuhan 430030, Hubei, Peoples R China
[14] Guangzhou Med Univ, Affiliated Hosp 1, Guangzhou Inst Resp Dis, Guangzhou 510120, Guangdong, Peoples R China
[15] Guangxi Zhuang Autonomous Reg Peoples Hosp, Dept Resp Dis, Nanning 530021, Guangxi, Peoples R China
[16] Shenyang Med Coll, Cent Hosp, Dept Resp Dis, Shenyang 110024, Liaoning, Peoples R China
[17] Beijing Gongan Hosp, Dept Resp Dis, Beijing 100006, Peoples R China
[18] Jiangsu Senil Hosp, Dept Resp Dis, Nanjing 210024, Jiangsu, Peoples R China
[19] Ningxia Med Coll, Affiliated Hosp, Dept Resp Dis, Yinchuan 750004, Ningxia, Peoples R China
[20] China Med Univ, Affiliated Hosp 2, Dept Resp Dis, Shenyang 110004, Liaoning, Peoples R China