Iwamoto Michiko, Yamamoto Hironori, Kita Hiroto, Sunada Keijiro, Hayashi Yoshikazu, Sato Hiroyuki, Sugano Kentaro
Department of Internal Medicine, Division of Gastroenterology, Jichi Medical School, Tochigi, Japan.
Gastrointest Endosc. 2005 Sep;62(3):440-1; discussion 441. doi: 10.1016/s0016-5107(05)01585-3.