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? References in periodicals archive |
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The questionnaire covered topics such as sociodemographic
background, age at first sexual intercourse, number of partners, use of
contraception, abortion, and experience of group sex. , Young age at first sexual intercourse and
sexually transmitted infections in adolescents and young adults,
American Journal of Epidemiology, 2005, 161(8):774-780. Age at first sexual intercourse remains a significant predictor of
age at first motherhood. |
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