1. Department of Respiratory and Critical Medicine The Second Affiliated Hospital of Guangdong Medical University Zhanjiang China
2. Department of Respiratory and Critical Medicine The Affiliated Hospital of Guangdong Medical University Zhanjiang China
3. Guangzhou Medical University, 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