1 Assistant Professor of Medicine, Director, GI Nutrition, Obesity and Celiac Disease Program, Division of Gastroenterology, University of Pennsylvania Perelman School of Medicine, 3400 Civic Center Boulevard, 4 South, Philadelphia, PA 19104, USA. Electronic address: [email protected].
2 Associate Professor of Medicine, Clinical Director, Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Director, Johns Hopkins Integrative Medicine and Digestive Center, 2360 West Joppa Road, Suite 200, Lutherville, MD 21093, USA. Electronic address: [email protected].