Cristina Cuerda1, Stéphane M Schneider2, André Van Gossum3. 1. Nutrition Unit, Hospital General Universitario Gregorio Marañón, Madrid, Spain. Electronic address: cuerda.cristina@gmail.com. 2. Department of Gastroenterology and Clinical Nutrition, Archet Hospital, University of Nice Sophia Antipolis, Nice, France. 3. Department of Gastroenterology, Clinic of Intestinal Diseases and Nutritional Support, Hopital Erasme, Free University of Brussels, Brussels, Belgium.