1. Department of Internal Medicine, University Medical Center Mainz, 55131, Mainz, Rheinland-Pfalz, Germany
2. Department of Biomedical Research, University of Bern, Bern, Switzerland
3. Klagenfurt am Wörthersee Hospital, 3 Internal Medicine & Gastroenterology, Hepatology, Endocrinology, Rheumatology & Nephrology, Klagenfurt, Austria
4. Hospital of the Goethe University Frankfurt Center of Internal Medicine, Frankfurt am Main, Hessen, Germany
5. Hannover Medical School, Hannover, Germany