1. Departments of Thoracic Surgery, Ina Central Hospital, Ina, Japan.
2. Department of Thoracic Surgery, Shinshu University School of Medicine, Matsumoto, Japan.
3. Department of Surgery, Ina Central Hospital, Ina, Japan.
4. Departments of Gynecology, Ina Central Hospital, Ina, Japan.
5. Departments of Pathology, Ina Central Hospital, Ina, Japan.