A Johns Hopkins Press Health Book

North American Society for Pediatric Gastroenterology, Hepatology and NutritionEditors-in-Chief Maria Oliva-Hemker, M.D., David Ziring, M.D., and Athos Bousvaros, M.D.

Edward E. Wallach, MD, and Esther Eisenberg, MD, MPH

edited by Adam E. M. Eltorai, PhD, Alan H. Daniels, MD, Derek R. Jenkins, MD, and Lee E. Rubin, MD

Lisa M. Shulman, MD

Susan J. Noonan, MD, MPHforeword by Jerrold F. Rosenbaum, MD, and Timothy J. Petersen, PhD

Edward A. Bell, PharmD, BCPS

Scott H. Sicherer, MDintroduction by Hugh A. Sampson, MD, Jaffe Food Allergy Institute, Icahn School of Medicine at Mount Sinai

Sara Palmer, PhD

North American Society for Pediatric Gastroenterology, Hepatology and Nutritionedited by Maria Oliva-Hemker, MD, David Ziring, MD, Shehzad A. Saeed, MD, and Athos Bousvaros, MD, MPH