Lim Joel R, Fitzgerald Joseph F, Dewitt John M
Division of Pediatric Gastroenterology, Hepatology, and Nutrition, James Whitcomb Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, USA.
J Pediatr Gastroenterol Nutr. 2004 Jan;38(1):26, 47. doi: 10.1097/00005176-200401000-00008.