Munich University General and Cardiac Surgery Residency (1979-1983)
Friedrichshafen Hospital General and Vascular Surgery Residency (1983-1986)
Munich University Cardiothoracic Surgery Residency (1986-1989)
Ulm University Senior Staff Surgeon in Cardiothoracic Surgery (1989-1994)
Munich University Professor in Cardiac Surgery (1994-1998)
Bonn University Professor and Chairman in Cardiac Surgery (1998)
Minimal Invasive Cardiac Surgery
Mitral Valve Repair
Surgery of the Thoracic Aorta
Hypoplastic Left Heart Syndrome
Stem cell research
Prevention of neurological complications in cardiac surgery