1. Pediatrics and Adolescentology Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy.
2. Pediatric Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
3. Mass General Hospital for Children, Harvard Medical School, Boston, MA, United States.
4. Division of Pediatric Gastroenterology and Nutrition, Harvard Medical School, Boston, MA, United States.
5. Center for Celiac Research and Treatment, Mucosal Immunology and Biology Research Center, United States of America Celiac Research Program, Harvard Medical School, Boston, MA, United States.
6. Clinical Nutrition and Dietetics Service, Unit of Internal Medicine and Endocrinology, ICS Maugeri IRCCS, Pavia, Italy.
7. Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy.