1. Department of Dermatology; Federal University of São Paulo; São Paulo Brazil
2. Center for Blistering Diseases; Department of Dermatology; University Medical Center Groningen; University of Groningen; Groningen the Netherlands
3. Immunogenetics Laboratory; Lauro de Souza Lima Institute; Bauru São Paulo Brazil
4. Department of Clinical and Therapeutic; Lauro de Souza Lima Institute; Bauru São Paulo Brazil
5. Department of Epidemiology; University Medical Center Groningen; University of Groningen; Groningen the Netherlands