[1] Univ Estadual Campinas, Dept Doencas Sexualmente Transmissiveis Aids Soci, Sao Paulo, Brazil
[2] Univ Sao Paulo, Fac Med, Dept Dermatol, Sao Paulo, Brazil
[3] Univ Fed Sao Paulo, Dept Dermatol, Sao Paulo, Brazil
[4] Minist Saude, Programa Nacl Controle Doencas Sexualmente Transm, Amazonia, Brazil