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Autor:
Idete Ioschpe Zimerman, Suzane Beirão De Almeida, Andrea Caleffi, Mario Bernardes Wagner, Aurea Beirão De Almeida, Ronald Pagnoncelli de Souza, Fernando Puperi
Publikováno v:
The Journal of adolescent health : official publication of the Society for Adolescent Medicine. 14(4)
A study of sexual behavior among teenagers was carried out in a random sample of 884 second degree school (high school) students of Porto Alegre (South Brazil) by means of a self-report questionnaire. The students' ages ranged from 13 to 22 years old