1. Department of Medicine, Nikko Memorial Hospital
2. Department of Pulmonary Medicine, Graduate School of Comprehensive Human Science, University of Tsukuba
3. Department of Respiratory Medicine, National Hospital Organization Nishiniigata Chuo Hospital
4. Department of Respiratory Medicine and Infections Diseases, Niigata University Graduate School of Medical and Dental Sciences
5. Division of Respiratory Medicine and Thoracic Surgery, Hitachi General Hospital
6. Division of Diagnostic Pathology, Saitama Prefectural Cardiovascular and Respiratory Center