Qian Yuan, MD, PhD, is the clinical director of the Food Allergy Center at Massachusetts General Hospital and an assistant professor in pediatrics at Harvard Medical School. A specialist in pediatric gastroenterology and nutrition, Dr. Yuan attended Beijing Second Medical College in Beijing, China, and earned his PhD in immunology at the University of Auckland in New Zealand. Nancy S. Rotter, PhD, is a licensed pediatric psychologist with more than two decades of clinical experience. The assistant director of the outpatient child and adolescent psychiatry service at Massachusetts General Hospi...