Shikuwa S, Matsunaga K, Osabe M, Ofukuji M, Omagari K, Mizuta Y, Takeshima F, Murase K, Otani H, Ito M, Shimokawa I, Fujii M, Kohno S
Department of Internal Medicine, Omura Municipal Hospital, Nagasaki, Japan.
Gastrointest Endosc. 1998 Jun;47(6):529-32. doi: 10.1016/s0016-5107(98)70257-3.