Adolescents' knowledge of HPV and sexually transmitted infections at public high schools in São Paulo: A cross-sectional study.

Purpose: To assess the knowledge of students from public high schools in poor communities about HPV and Sexually Transmitted Infections and their attitude towards and prevention of such diseases.

Patients And Methods: Cross-sectional study with adolescents from public schools of São Paulo - Brazil. Participants were selected for an interview by a randomization program.

Analysis of the PvuII and XbaI polymorphisms in the estrogen receptor alpha gene in girls with central precocious puberty: a pilot study.

Background: Precocious puberty (PP) is defined as premature pubertal development. Its consequences surpass the physical evidence of sexual maturity with the premature epiphyseal closure of the long bones and the reduction of adult stature by varied degrees. Central PP is characteristically dependent on GnRH and most of its causes are not completely known.