Institution: | 1. Celiac Disease Center, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA;2. Clinical Epidemiology Unit, Department of Medicine, Karolinska University Hospital and Karolinska Institute, Stockholm, Sweden;3. Division of Gastroenterology, Department of Internal Medicine, VA North Texas Healthcare System and UT Southwestern Medical Center, Dallas, TX, USA;4. Department of Pediatrics, Örebro University Hospital, Sweden |