1. Department of Urology, Shiga University of Medical Science, Seta Tsukinowa, Otsu, Shiga 610-0321, Japan
2. Division of Medical Life System, Department of Life and Medical Science, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
3. Department of Plastic and Reconstructive Surgery, Kindai University, Osaka 589-0014, Japan
4. Department of Gastroenterology, Kusatsu General Hospital, Yabase, Kusatsu, Shiga 525-8585, Japan
5. Department of Surgery, Yawata Chuo Hospital, Yawatagotanda, Yawata, Kyoto 614-8071, Japan
6. Department of Gastroenterology, Ueda Clinic, Kitanakaieshita, Takanosu, Akita 018-3331, Japan