Bruno Moura-Fernandes, Department of Radiation Oncology, Coimbra University Hospital, Coimbra, Portugal Carolina Carvalho, Department of Radiation Oncology, Coimbra University Hospital, Coimbra, Portugal Ricardo Vieira, Department of Dermatology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal Margarida Borrego, Department of Radiation Oncology, Coimbra University Hospital, Coimbra, Portugal