1. State Key Laboratory of Respiratory Disease , National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health , The First Affiliated Hospital of Guangzhou Medical University , Guangzhou , China
2. Department of Thoracic Surgery, Guangzhou Institute for Respiratory Health , The First Affiliated Hospital of Guangzhou Medical University , Guangzhou , China
3. Department of Respiratory and Critical Care Medicine , Foshan Second People's Hospital, Affiliated Foshan Hospital of Southern Medical University , Foshan , China