Improving contraceptive technology: is it a zero-sum game?
Doyle
Lee Lee
LL
Shields
Wayne C
WC
D000293:Adolescent; D000328:Adult; D003267:Contraception / Q000379:methods / Q000592:standards / Q000639:trends; D003268:Contraception Behavior / Q000639:trends; D003695:Delivery of Health Care / Q000191:economics; D005260:Female; D006801:Humans; D014481:United States