| Literature DB >> 12276861 |
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Abstract
Entities:
Keywords: Contraception; Contraceptive Effectiveness; Contraceptive Methods; Family Planning; Oral Contraceptives; Use-effectiveness
Mesh:
Substances:
Year: 1974 PMID: 12276861
Source DB: PubMed Journal: JAMA ISSN: 0098-7484 Impact factor: 56.272