1) Department of Surgery, Institute of Gastroenterology, Tokyo Women’s Medical University, Tokyo, Japan
2) Career Development Center for Medical Professionals, Tokyo Women’s Medical University, Tokyo, Japan
3) Utsunomiya Memorial Hospital, Utsunomiya, Japan

Yoshiko Bamba¹⁾²⁾, Yoshiko Honda²⁾, Akiko Nishii²⁾, Yuka Kaneko¹⁾, Hiroka Kondo¹⁾, Fumi Maeda¹⁾, Masakazu Yamamoto³⁾, Michio Itabashi¹⁾, Shigeki Yamaguchi¹⁾