Counsel women to take ECPs as soon as possible.
D000569:Americas; D002986:Clinical Trials as Topic; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital; D019049:Developed Countries; D005193:Family Planning Services; D016912:Levonorgestrel; D009656:North America; D012106:Research; D014481:United States
D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital; D016912:Levonorgestrel
Americas; Clinical Research; Clinical Trials; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Postcoital; Contraceptive Agents, Progestin; Contraceptive Methods; Developed Countries; Family Planning; Fertility Control, Postcoital; Levonorgestrel; North America; Northern America; Oral Contraceptives; Research Methodology; Summary Report; United States