1. Cardiovascular and Gastroenterological Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
2. Department of Laboratory and Vascular Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
3. Department of Surgery, Kirishima Medical Center, Kirishima, Japan
4. Department of Surgery, Kagoshima Medical Center. Kagoshima, Japan