| Literature DB >> 8688746 |
Abstract
Entities:
Keywords: Biology; Breast Cancer--etiology; Cancer; Contraception; Contraceptive Methods; Critique; Diseases; Error Sources; Family Planning; Measurement; Neoplasms; Oral Contraceptives; Research Methodology; Risk Factors
Mesh:
Substances:
Year: 1996 PMID: 8688746 PMCID: PMC2351509 DOI: 10.1136/bmj.313.7049.63
Source DB: PubMed Journal: BMJ ISSN: 0959-8138