1. Department of Cardio-Pulmonary Circulation, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
2. Department of Respiratory Medicine, Punan Hospital, Pudong New District, Shanghai, China
3. Department of Respiratory Medicine, Gongli Hospital, Pudong New District, Second Military Medical University, Shanghai, China
4. Department of Pulmonary Function Test, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
5. Department of Respiratory Medicine, Renji Hospital, Jiaotong University School of Medicine, Shanghai, China