1. Department of Pathology Japanese Red Cross Medical Centre Tokyo Japan
2. The Study Group of Pneumothorax and Cystic Lung Diseases Tokyo Japan
3. Division of Human Pathology Juntendo University Faculty of Medicine and Graduate School of Medicine Tokyo Japan
4. Pneumothorax Centre Tamagawa Hospital Tokyo Japan
5. Division of Molecular and Biochemical Research Biomedical Research Centre Juntendo University Faculty of Medicine and Graduate School of Medicine Tokyo Japan
6. Department of Respiratory Medicine Iizuka Hospital Fukuoka Japan
7. Division of Respiratory Medicine Juntendo University Faculty of Medicine and Graduate School of Medicine Tokyo Japan