Institution: | 1.Institute for Social Medicine, Epidemiology and Health Economics, Charité – Universit?tsmedizin Berlin, Corporate Member of Freie Universit?t Berlin, Humboldt-Universit?t zu Berlin, and Berlin Institute of Health, Berlin, Germany ;2.Katholische Akademie “Die Wolfsburg,” Bistum Essen, Falkenweg 6, 45478, Mülheim an der Ruhr, Germany ;3.Poznan Medical University, Department Pediatric Gastroenterology, ul. Szpitalna 27/33, 60-572, Poznan, Poland ;4.Universit?t Witten-Herdecke, Department Psychologie, Alfred Herrnhausen Str. 50, 58455, Witten, Germany ;5.Erlenweg 31, 35321, Laubach, Germany ; |