Teen sex, AIDS, and contraception.
Dawson
G
G
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control*; D000293:Adolescent; D000294:Adolescent Behavior; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000627:therapeutic use*; D010865:Pilot Projects; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012725:Sexual Behavior; D014481:United States
D016912:Levonorgestrel