Giselle de Barros Silva1, Aline Donati2, Corina J van den Hurk3. 1. Department of Dermatology, Centro Paulista de Oncologia, Sao Paulo, Brazil. 2. Department of Dermatology, Hospital do Servidor Publico Municipal de Sao Paulo, Sao Paulo, Brazil. 3. Netherlands Comprehensive Cancer Organisation (IKNL), Research Department, Utrecht, The Netherlands.