A study of girls at Massachusetts health clinics found that one in 13 said they had participated in group sex -- and that the behavior was strongly associated with pornography and child abuse.
Although the study, published by the Journal of Urban Health: Bulletin of New York Academy of Medicine, is a small one, the researchers said it offers a window into a risky sex behavior that has so far been given little legitimacy.
More than half of the girls who reported experiencing group sex said...
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