1. Dermatology Service, Departamento de Clinica Medica Federal University of Health Sciences of Porto Alegre Porto Alegre Brazil
2. Section of Pediatric Dermatology Hospital da Criança Santo Antonio, ISCMPA, Irmandade da Santa Casa de Misericórdia de Porto Alegre Porto Alegre Brazil
3. Medicine School Federal University of Pelotas Pelotas Brazil
4. Medicine School Catholic University of Pelotas Pelotas Brazil