Pohl J F, Melin-Aldana H, Rudolph C
Department of Pediatric Gastroenterology and Nutrition, Children's Hospital Medical Center, Cincinnati, Ohio 45229-3039, USA.
J Pediatr Gastroenterol Nutr. 2000 Apr;30(4):458-60. doi: 10.1097/00005176-200004000-00022.