Surg. in Chief , Clinic for Thoracic-and Cardiovascular Surgery,Heart Center Duisburg (1989-2008)
Board of Directors GSTCVS : Assessor (1994-1997)
Board of Directors GSTCVS : Treasurer (1997-2003)
Board of Directors GSTCVS : 1. Vice President (2003-2005)
Board of Directors GSTCVS : President (2005-2007)
Board of Directors GSTCVS : 2.Vice President (2007-2009)
Board of Directors GSTCVS : Historian (2011 -
Aortic aneurysm surgery
Congenital heart disease
Quality assurance
Risk analysis and adjustment
Minimal invasive cardiac surgery
Heart valve reconstruction
H.-H.-University Düsseldorf