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Title
Predictive relationship between adolescent oral and vaginal sex: results from a prospective, longitudinal study.
Authors
Song, Anna V; Halpern-Felsher, Bonnie L
Abstract
To (1) identify the temporal order between oral and vaginal sex onset; (2) test whether oral sex or vaginal sex is a risk or protective factor for the other; and (3) determine whether the relationship between oral and vaginal sex varies across time.