| Literature DB >> 2500194 |
Abstract
Entities:
Keywords: Age Factors; Biology; Breast Cancer; Cancer; Contraception; Contraceptive Agents, Female--beneficial effects; Contraceptive Agents, Progestin--beneficial effects; Contraceptive Agents--beneficial effects; Contraceptive Methods--beneficial effects; Contraceptive Methods--side effects; Control Groups; Demographic Factors; Developed Countries; Diseases; Endocrine System; Endometrial Cancer; Europe; Family Planning; Hormones; Matched Groups; Neoplasms; Northern Europe; Oral Contraceptives, Combined--beneficial effects; Oral Contraceptives, Combined--side effects; Oral Contraceptives--beneficial effects; Oral Contraceptives--side effects; Ovarian Cancer; Physiology; Population; Population Characteristics; Progestational Hormones; Progesterone; Research Methodology; United Kingdom
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Year: 1989 PMID: 2500194 PMCID: PMC1836512 DOI: 10.1136/bmj.298.6683.1269
Source DB: PubMed Journal: BMJ ISSN: 0959-8138