1 Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
2 Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Universidade de São Paulo, Ribeirão Preto, SP, Brazil; Department of Pathology and Forensic Medicine, Faculty of Medicine, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
3 Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Universidade de São Paulo, Ribeirão Preto, SP, Brazil. Electronic address: cssouza@fmrp.usp.br.