1. Department of Dermatology, Phlebology and Lymphology, Nij Smellinghe Hospital, Drachten, The Netherlands
2. Department of Vascular Surgery, Nij Smellinghe Hospital, Drachten, The Netherlands
3. Department of Vascular Surgery, Tjongerschans Hospital, Heerenveen, The Netherlands
4. Department of Clinical Sciences Malmö, Lund University, Plastic and Reconstructive Surgery, Malmö University Hospital, Malmö, Sweden