1. Dermatology Service; Santa Casa de Misericórdia de Porto Alegre Complexo Hospitalar; Porto Alegre Brazil
2. Graduate Program in Medicine: Department of Medical Sciences; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
3. Department of Pathology, Faculdade de Medicina; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
4. Department of Microbiology, Immunology and Parasitology; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil