1. Department of Respiratory and Critical Care Medicine, Zhongshan City People’s Hospital, Zhongshan, Guangdong, China
2. Department of Pulmonary and Critical Care Medicine, Guangzhou Institute of Respiratory Health, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, State Key Laboratory of Respiratory Diseases, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
3. Xinxiang Medical University, Xinxiang, Henan, China
4. Department of Pulmonary and Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China