Takasaki M, Horimi T, Takahashi I, Takamatsu M, Hirano A, Tsuji A, Yorimitsu Y, Morita S
Department of Gastroenterology, Surgery, Internal Medicine, and Radiology, Kochi Municipal Central Hospital, Japan.
Gastrointest Endosc. 1997 Jan;45(1):96-8. doi: 10.1016/s0016-5107(97)70314-6.