Abstinence and safer sex HIV risk-reduction interventions for African American adolescents: a randomized controlled trial. cofacilitators.Abstinence intervention stressed delaying sexual intercourse or reducing itsfrequency; safer-sex intervention stressed condom use; control intervention... J Jemmott - 《...
Evolutionary Genetics: The Evils of Abstinence From Sex The evolutionary significance of sexual reproduction and genetic recombination is a long-standing puzzle. Some recent experiments on Drosophila show that a... B Charlesworth - 《Current Biology Cb》 被引量: 25发表: 2002年 The Greek Praise of...