[1] Department of Emergency Medicine, Kyoto University Hospital, Sakyo-ku, Kyoto 606-8507
[2] Department of Surgery, Kyoto City Hospital, Kyoto
[3] Department of Radiology, Kyoto City Hospital, Kyoto
[4] Department of Radiology, Graduate School of Medicine, Kyoto University, Kyoto
[5] Second Department of Internal Medicine, Graduate School of Medicine, Kyoto University, Kyoto
[6] Medical Technology College, Kyoto University, Kyoto
[7] Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto
[8] Department of Gastrointestinal Surgery, Graduate School of Medicine, Kyoto University, Kyoto