1. From the Department of Respiratory Medicine, Itabashi Chuo Medical Center , 2-12-7 Azusawa, Itabashi-ku , Tokyo 174-0051, Japan
2. Department of General Medicine, Itabashi Chuo Medical Center , 2-12-7 Azusawa, Itabashi-ku , Tokyo 174-0051, Japan
3. Department of Thoracic Surgery, Itabashi Chuo Medical Center , 2-12-7 Azusawa, Itabashi-ku , Tokyo 174-0051, Japan