1. Professor for Dermatology and Venerology, Department of Dermatology, Venerology and Allergology, University of Essen, Hufelnadstr. 55, 45147 Essen, Germany
2. Nurse, Askelpios Hospital Harburg, Wound care centrum in the Department of Vascular Sugery, Eißendorfer Pferdeweg 52, 21075 Hamburg, Germany
3. Nurse, Education in Wound Management, Anne-Frank-Str. 10, 48480 Spelle, Germany
4. Nurse, Hospital in Justizvollzugsanstalt Lingen, Kaiserstraße 5, 49809 Lingen, Germany
5. Professor for Angiology, Department for Angiology, Helios clinic, Lutherplatz 40, 47805 Krefeld, Germany
6. Doctor (GP), Gemeinschaftspraxis Bramfeld, Bramfelder Chaussee 200, 22177 Hamburg, Germany