Karima Farrag1,2, Yogesh M Shastri3, Ulrike Beilenhoff4, Ayşegül Aksan2,5, Jürgen Stein6,2. 1. Department of Gastroenterology and Clinical Nutrition, DGD Clinics Sachsenhausen, Frankfurt am Main, 60594 Frankfurt am Main, Germany. 2. Interdisciplinary Crohn Colitis Centre Rhein-Main, 60594 Frankfurt am Main, Germany. 3. NMC Specialty Hospital, Abu Dhabi 6222, United Arab Emirates. 4. Scientific Secretariat, European Society of Gastroenterology and Endoscopy Nurses and Associates (ESGENA), 89075 Ulm, Germany. 5. Faculty of Health Sciences, Hacettepe University, 06532 Ankara, Turkey. 6. Department of Gastroenterology and Clinical Nutrition, DGD Clinics Sachsenhausen, Frankfurt am Main, 60594 Frankfurt am Main, Germany j.stein@em.uni-frankfurt.de.