Doctor of Medicine, University Freiburg, Germany, 1962. Doctor of Philosophy (honorary), University Luebeck, Germany, 1996.
Research fellow in pathology, U. Munich, Germany, 1961-1962; research fellow in physiology, U. Freiburg, Germany, 1962-1964; resident in surgery, U. Cologne, Germany, 1964-1970; surgeon on staff, U. Cologne, 1970-1971; assistant professor, U. Cologne, 1971-1973; associate professor surgery, U. Munich, 1973-1978; department chairman surgery, U. Luebeck, 1978-1989; department chairman surgery, U. Munich, since 1989.
Fellow: Royal College Surgeons England. Member: European Surgical Association, New York Academy of Sciences, German Society Vascular Surgery, German Interdisciplinary Association Intensive Care (honorary. General secretary 1993—2000, congress president 2000, president 2001-2002), North-Western Society Surgeons (honorary.
1983), Bavarian Society Surgeons (honorary. 1992), German Society Surgery (honorary), Austrian Society Surgery (honorary), German Society Angiology, International Society Surgery.
Married Christa M. Denz, October 21, 1967. Children: Georg Friedrich, Claus Christof.