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Heron, Jon; Low, Nicola; Lewis, Glyn; Macleod, John; Ness, Andy; Waylen, Andrea (2015). Social Factors Associated with Readiness for Sexual Activity in Adolescents: A Population-Based Cohort Study. Archives of Sexual Behavior, 44(3), pp. 669-678. Springer 10.1007/s10508-013-0162-5
