1. Respiratory Medicine, Second Affiliated Hospital of Chongqing Medical University, 400010 Chongqing, China
2. Respiratory Medicine, Zhongshan Hospital, Fudan University, Shanghai 20032, China
3. Orthopedics Medicine, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen 517000, China
4. Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
5. Respiratory Medicine, First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500 Sichuan, China
6. Respiratory Medicine, Affiliated Hospital of Guiyang Medical University, 550004 Guiyang, China
7. Southern Medical University, Guangzhou 510280, China