| Literature DB >> 9321535 |
Abstract
Keywords: Americas; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Postcoital; Contraceptive Effectiveness; Contraceptive Mode Of Action; Developed Countries; Family Planning; Fertility Control, Postcoital; Literature Review; North America; Northern America; United States
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Year: 1997 PMID: 9321535 DOI: 10.1056/NEJM199710093371507
Source DB: PubMed Journal: N Engl J Med ISSN: 0028-4793 Impact factor: 91.245