1. Department of Gastroenterology, Hepatology and EndocrinologyHannover Medical School Hannover Germany
2. Department of Gastroenterology and HepatologyUniversity Hospital Essen Essen Germany
3. Department of Respiratory Medicine and German Centre of Lung Research (DZL)Hannover Medical School Hannover Germany
4. Division of Nephrology and HypertensionHannover Medical School Hannover Germany