HomeReferee for scientific journalsClinical Nephrology (Editorial Board) Kidney International Nephrology, Dialysis and Transplantation Memberships Interdisziplinary working group for organ transplantation of the Free University of Berlin 1971-1975 German Society of Nephrology since 1977 International Society of Nephrology ince 1978 Association of German Internists since 1987 German Working Group for Clinical Nephrology since 1989 New York Academy of Sciences (NYAS) since 1991 American Association for the Advancement of Science (AAAS) since 1991 European Renal Association (ERA/EDTA) since1992 American Society of Nephrology since 1998GDNÄ, Gesellschaft Deutscher Naturforscher und Ärzte since 2006 Home