Edited by Robert Wyllie, MD, Head, Department of Pediatric Gastroenterology and Nutrition, Chair, Department of Medical Subspecialties, Pediatrics, The Cleveland Clinic Foundation, Cleveland, OH; Jeffrey S. Hyams, MD, Professor, Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT; Head, Division of Digestive Diseases and Nutrition, Connecticut Children's Medical Center, Hartford, CT; and Marsha Kay |