1. Justus-Liebig-Universität, Institute of Nutritional Science, Giessen, Germany
2. Interdisciplinary Crohn-Colitis Centre Rhein-Main, Clinical and Scientific Research, Frankfurt am Main, Germany
3. J.W. Goethe University, Institute of Pharmaceutical Chemistry, Frankfurt am Main, Germany
4. Hacettepe University, Institute of Science, Ankara, Turkey
5. Hacettepe University, Institute of Nutritional Science, Ankara, Turkey
6. Agaplesion Markus Krankenhaus, Gastroenterology, Frankfurt am Main, Germany
7. DGD Clinics Sachsenhausen, Gastroenterology and Clinical Nutrition, Frankfurt am Main, Germany