Seidman Ernest G, Sant'Anna Ana Maria Guilhon de Araujo, Dirks Martha H
Division of Pediatric Gastroenterology, Hepatology and Nutrition, Sainte-Justine Hospital, Department of Pediatrics, University of Montreal, 3175 Côte Sainte Catherine Road, Montréal, Québec, H3T 1C5, Canada.
Gastrointest Endosc Clin N Am. 2004 Jan;14(1):207-17. doi: 10.1016/j.giec.2003.10.013.