Government of the People's Republic of China - China-Japan Friendship Hospital, Guangzhou Medical University - State Key Laboratory of Respiratory Disease, Government of the People's Republic of China - Department of Pulmonary and Critical Care Medicine, Government of the People's Republic of China - China-Japan Friendship Hospital, China Medical University - Institute of Respiratory Disease, Government of the People's Republic of China - China-Japan Friendship Hospital, Government of the People's Republic of China - China-Japan Friendship Hospital, Government of the People's Republic of China - China-Japan Friendship Hospital, Government of the People's Republic of China - China-Japan Friendship Hospital, Nanjing Medical University - Jiangsu Provincial Key Laboratory of Geriatrics, Government of the People's Republic of China - China-Japan Friendship Hospital, Government of the People's Republic of China - China-Japan Friendship Hospital, China Medical University - Institute of Respiratory Disease, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Fuwai Hospital and China Medical University - Department of Respiratory and Critical Care Medicine