1. Department of Heart- and Vascular Surgery; University Hospital of Schleswig-Holstein; Kiel Germany
2. Department of Dermatology; University Hospital of Schleswig-Holstein; Kiel Germany
3. Department of Vascular and Thoracic Surgery; Imland Clinic Rendsburg; Rendsburg Germany
4. Department of Traumatology; University Hospital of Schleswig-Holstein; Kiel Germany
5. Institute of Anatomy and Cell Biology; RWTH University of Aachen; Aachen Germany