Teen pregnancy prevention issues.
Nicoletti
Angela
A
Brigham and Women's Hospital, Boston, MA 02115, USA.
D000293:Adolescent; D016497:Adolescent Health Services; D000367:Age Factors; D005193:Family Planning Services; D005260:Female; D006801:Humans; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000517:prevention & control* / Q000706:statistics & numerical data; D012736:Sex Education; D012725:Sexual Behavior; D014481:United States / Q000453:epidemiology