1. Department of Human Pathology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan
2. The Study Group for Pneumothorax and Cystic Lung Diseases, Setagaya-Ku, Tokyo, Japan
3. Department of Respiratory Medicine, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan
4. Pneumothorax Research Center and Division of Thoracic Surgery, Nissan Tamagawa Hospital, Tokyo, Japan
5. Department of Medical Oncology, Juntendo University Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan
6. Department of Thoracic Surgery, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
7. Department of Pathology, Nissan Tamagawa Hospital, Tokyo, Japan