1. Crohn Colitis Clinical Research Center Rhein-Main, Frankfurt/Main, Germany
2. Department of Pharmaceutical Chemistry, University of Frankfurt, Frankfurt/Main, Germany
3. Department of Gastroenterology and Clinical Nutrition, DGD Clinics Sachsenhausen, Frankfurt/Main, Germany
4. Faculty of Health Sciences, Hacettepe University, Ankara, Turkey
5. Department of Medicine I, Agaplesion Markus Hospital, Frankfurt/Main, Germany