1. Division of Haemostaseology, Department of Internal Medicine; Goethe University Hospital; 60590 Frankfurt am Main Germany
2. Division of Vascular Medicine, Swiss Cardiovascular Centre; University Hospital Bern; 3010 Bern Switzerland
3. Department of Dermatology and Lübeck Institute of Experimental Dermatology; University of Lübeck; 23538 Lübeck Germany
4. Agaplesion Bethanien Hospital, Cardiovascular Centre Bethanien (CCB); 60389 Frankfurt am Main Germany