Postcoital contraception: a necessary, important option.
D000569:Americas; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003281:Contraceptives, Postcoital; D003710:Demography; D019049:Developed Countries; D003933:Diagnosis; D005193:Family Planning Services; D005298:Fertility; D008403:Mass Screening; D009656:North America; D010808:Physical Examination; D011153:Population; D011157:Population Dynamics; D011275:Pregnancy, Unwanted; D012725:Sexual Behavior; D014481:United States
D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003281:Contraceptives, Postcoital
Americas; Contraception; Contraceptive Agents, Female--indications; Contraceptive Agents, Postcoital--indications; Contraceptive Agents--indications; Demographic Factors; Developed Countries; Examinations And Diagnoses; Family Planning; Fertility; North America; Northern America; Physical Examinations And Diagnoses; Population; Population Dynamics; Pregnancy, Unwanted; Reproductive Behavior; Screening; United States