Heyer K1, Blome C1 Storck M2, Schmidt M2, Herberger K1, Imkamp U3, Wild T4, Debus S5, Augustin M1 1) Institute for Health Services Research in Dermatology and Nursing, University Medical Center, Hamburg-Eppendorf 2) Clinic for Vascular and Thoracic surgery, Karlsruhe, 3) Mamedicon GmbH, Magdeburg, 4) German Wound Academy, 5) Clinic for Vascular Surgery, University Medical Center, Hamburg-Eppendorf