1. State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People’s Republic of China
2. Department of Geriatrics, National Key Clinical Specialty, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, People’s Republic of China
3. Department of Respiratory and Critical Care Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People’s Republic of China
4. Department of Biostatistics, School of Public Health, Southern Medical University, Guangzhou, People’s Republic of China
5. Department of Thoracic Surgery, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People’s Republic of China
6. Department of Respiratory and Critical Care Medicine, Foshan Second People's Hospital, Affiliated Foshan Hospital of Southern Medical University, Foshan, People’s Republic of China