- Past President of the German Society of Angiology (1993) and President elect 2003
- German League for Vascular Diseases (President)
- German Stroke Foundation (Member of the Managing Board)
- German, Austrian and Swiss Association of Angiology (Member of Advisory Board and Member of the Managing Board)
- German Heart Foundation (Scientific Advisory Board)
- Member and Chairman in TASC (TransAtlantic Inter-Society Consensus on the Management of PAOD) (Representative German Society of Angiology and German Society of Vascular Surgery).
