Reducing unintended pregnancy in the United States.
Trussell
James
J
Wynn
L L
LL
D000293:Adolescent; D000328:Adult; D003268:Contraception Behavior / Q000706:statistics & numerical data*; D005193:Family Planning Services / Q000191:economics / Q000379:methods; D005260:Female; D006291:Health Policy; D006801:Humans; D011247:Pregnancy; D049168:Pregnancy, Unplanned; D014481:United States / Q000453:epidemiology