1 Centro Dermatologia Epidermis, Instituto CUF, Porto, Portugal.
2 Portuguese Skin Cancer Association, Lisboa, Portugal.
3 Center for Health Technology and Services Research (CINTESIS) and Department of Health Information and Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.
4 Department of Dermatology, Instituto Valenciano de Oncologia, Valencia, Spain.
5 Faculty of Medicine, University of Porto, Porto, Portugal.