1. Department of Infectious Diseases and Clinical Microbiology; Beijing Chao-Yang Hospital; Beijing Institute of Respiratory Medicine; Capital Medical University; Beijing China
2. Institute of Respiratory Medicine; Beijing Hospital; Ministry of Heath; Beijing China
3. Department of Respiratory Medicine; Capital Medical University; Beijing China
4. Beijing Institute of Respiratory Medicine; Beijing China
5. Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders; Beijing China