1. Department of Plastic and Reconstructive Surgery, The Sahlgrenska Academy, Gothenburg University. Sahlgrenska University Hospital, Gothenburg, Sweden;
2. Faculty of Medicine, Lund University, Lund, Sweden;
3. Department of Medical and Health Sciences, National Center for Priority Setting in Health-Care, Linköping University, Linköping, Sweden;
4. Västra Götaland Region, Sweden;
5. Borås University, Borås, Sweden