1. Department of Thoracic Surgery, Otemae Hospital
2. Department of Thoracic Surgery, Higashiosaka City Medical Center
3. Division of Chest Surgery, Hyogo Cancer Center
4. Department of Thoracic Surgery, Nagoya University Graduate School of Medicine
5. Departments of Thoracic Surgery, Osaka Habikino Medical Center
6. Department of General Thoracic Surgery, Japan Community Health Care Organization, Osaka Hospital
7. Department of Thoracic Surgery, Respiratory Disease Center, Kyoto Katsura Hospital
8. Department of General Thoracic Surgery, Osaka International Cancer Institute