1. Department of Oncology and Pathology; Karolinska Institutet; Stockholm SE 171 76 Sweden
2. Department of Dermatology and Venereology; Södersjukhuset Stockholm SE 118 83 Sweden
3. Unit of Research and Development in Local Health Care, County of Östergötland; Linköping Sweden
4. Department of Oncology and Pathology; Karolinska University Hospital; Stockholm SE 171 76 Sweden
5. Department of Medicine; Unit of Dermatology, Karolinska University Hospital; Stockholm SE 171 76 Sweden
6. Division of Health Care Analysis, Department of Medical and Health Sciences; Linköping University; Linköping Sweden