Abeygunasekera Shehan, Freiman John, Engelman Jeffrey, Glenn Derek, Craig Philip
Department of Gastroenterology, The St. George Hospital, Kogarah, New South Wales, Australia.
Gastrointest Endosc. 2004 Mar;59(3):450-2. doi: 10.1016/s0016-5107(03)02822-0.