twenty-eight. Blum RW et al., The consequences away from race/ethnicity, earnings, and you can friends framework to the teenage chance behavior, Western Log from Personal Health, 2000, 90(12):1879–1884.

Hawes ZC, Wellings K and you can Stephenson J, Basic heterosexual intercourse in the uk: a peek at brand new literature, Diary from Intercourse Search, 2010, 47(2):137–152

30. Santelli JS et al., The latest organization off sexual habits that have socioeconomic standing, relatives design, and you will competition/ethnicity in our midst teenagers, Western Journal off Social Health, 2000, 90(10):1582–1588.

34. Kohler PK, Manhart Le free cuban chat room without registration and you will Lafferty We, Abstinence-simply and you may full gender knowledge in addition to initiation from intercourse and you will teen pregnancy, Diary out-of Adolescent Health, 2008, 42(4):344–351. (más…)