| Literature DB >> 953672 |
Abstract
Entities:
Keywords: Contraception; Contraceptive Effectiveness; Contraceptive Methods; Family Planning; Oral Contraceptives; Use-effectiveness
Mesh:
Substances:
Year: 1976 PMID: 953672 PMCID: PMC1687953 DOI: 10.1136/bmj.2.6034.528-c
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447