Doctor of Medicine, University Cologne, 1964.
Internship University Cologne, University Berlin, 1964-1966. Research fellow California Institute of Technology, Pasadena, 1967-1969. From senior lecturer to associate professor University Cologne, 1972-1983.
Professor Freie University, since 1983. Vice director department physiology Freie University, 1984-1986, vice dean faculty medicine, 1985-1989, head department Institute Physiology, 1987-1991, commission for research, 1990-1991, vice president medicine, 1992-1995, dean faculty medicine, 1995-1997, 1st vice president, 1997-1999, president, 1999-2003. President German Rectors Conference, 2003-2005.
Honorary professor Chinese Academy Medicine, Peking Union Medicine College, 2002, Samarkand State University, Usbekistan, 2003.
Editorial board Biorheology, 1986X, News in Physiological Sciences, 1987-1989, International Journal Microcirculation: Clinical & Experimental, 1987X, Revista Portuguesa de Hemorreologia, 1988X, Pflugers Archiv European Journal Physiology, 1989X, European Journal Vascular Surgery, 1992X, Microvascular Research, 1992X.
Served in German armed forces, 1957-1958. Member German Physiological Society, International Society Biorheology (secretary general 1986-1992, vice president 1992X), German Society Microcirculation (secretary general 1975-1980, chairman executive committee), European Society Microcirculation, Microcirculatory Society United States, European Society Clinical Haemorheology, European Society Cardiology (working group on angiology), Royal Society Medicine (chairman international working group on red cell deformability), International Union Physiological Sciences (chairman commission on microcirculation and capillary transport 1986-1997), International Liaison Committee, Berlin Physiological Society, Berlin Medical Society, German Society Cardiac and Circulatory Research, Society biomedical Research, Ernst Reuter Society, Berlin Science Society, Berlin-Brandenburg Society Cardiac and Circulatory Diseases, Berlin-Brandenburg Academy of Sciences Technology.
Married Marianne, 1966. 1 child, Florian.