Postamenorrheic versus postpartum strategies of contraception.
D000568:Amenorrhea; D003267:Contraception; D003299:Cooperative Behavior; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D005306:Fertilization; D006801:Humans; D007434:Intrauterine Devices; D008598:Menstruation; D008722:Methods; D008954:Models, Biological; D010060:Ovulation; D049590:Postpartum Period; D011247:Pregnancy; D011336:Probability; D013997:Time Factors