1. Department of Respiratory Diseases, Shanghai Pulmonary Hospital, Tongji University School of Medicine, China
2. Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, China
3. Department of Medicine and Therapeutics, University of the Ryukyus, Japan
4. Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Duke University School of Medicine, USA