1. Department of Surgery, Kuma Hospital, Kobe, Japan.
2. Ishikawa Gastroenterology Clinic, Osaka, Japan.
3. Department of Diagnostic Pathology, Kuma Hospital, Kobe, Japan.
4. Department of Medical Oncology and Hematology, Kobe University Hospital, Kobe, Japan.
5. Cancer Center, Kobe University Hospital, Kobe, Japan.
6. Department of Internal Medicine, Kuma Hospital, Kobe, Japan.