"The practice of meta-analysis": discussion. Meta-analysis of observational studies: a case study of work in progress.
ICRF Cancer Epidemiology Unit, Radcliffe Infirmary, Oxford, U.K.
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Beral
D001943:Breast Neoplasms / Q000139:chemically induced; D003276:Contraceptives, Oral / Q000009:adverse effects; D015914:Estrogen Replacement Therapy / Q000009:adverse effects; D005260:Female; D006801:Humans; D015201:Meta-Analysis as Topic; D015337:Multicenter Studies as Topic; D012107:Research Design
D003276:Contraceptives, Oral