Doctor of Medicine, University Zurich, 1965. Doctor of Philosophy, University Basel, Switzerland, 1966. Habil, University Ulm, Germany, 1971.
Teacher physiology, U. Fribourg, 1965-1967; assistant medical Department, University Zurich, 1967-1968; assistant medical Department, University Basel, 1968-1970; assistant professor department medicine, U. Ulm, 1970-1975; professor medical department, medical director, head Department, University Freiburg, since 1976.
Member European Society Clinical Respiratory Pathophysiology (secretary general 1972-1979), European Respiratory Society (president 1987-1990), Swiss Respiratory Society, German Respiratory Society, Austrian Society Pneumology, International Society Aerosols (president 1991-1994, career achievement award 1994), International Respiratory Care Association (president since 1995), Deutsche Gesellschaft Pneumologie (president 1996-1997), Austrian Society Pneumology (honorary member), Lungen University Atmungs Forschung.
Married Elisabeth Frieda Berger, March 26, 1936. Children: Urs, Susanne, Claudia.