1. Department of clinical sciences, University of Gothenburg, The Sahlgrenska Academy, Gothenburg, Sweden;
2. Department of Reconstructive Plastic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden;
3. Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden;
4. Health Technology Assessment centre, Region Västra Götaland, Gothenburg, Sweden;
5. Medical Library, Sahlgrenska University Hospital, Gothenburg, Sweden