1. ConvaTec Wound Healing Research Institute, Deeside, Flintshire, United Kingdom
2. Uppsala University Hospital, Uppsala, Sweden
3. Departments of Dermatology, University of Lund, Malmö General Hospital, Malmö, Sweden
4. Departments of Surgery, University of Lund, Malmö General Hospital, Malmö, Sweden
5. Department of Dermatology, University of Freiburg, Germany