References
- Parkin D M, Laara E, Muir C S. Estimates of the worldwide frequency of sixteen major cancers in 1980. Int J Cancer 1988; 41: 184–97
- Editorial. Cancer risks of oral contraception. Lancet 1989; 1: 21–2
- Chalmers T C, Smith H, Jr, Blackburn B, Silverman B, Schroeder B, Reitman D, Ambroz A. A method for assessing the quality of a randomized control trial. Control Clin Trials 1981; 2: 31–49
- Elwood J M. Causal relationships in medicine: a practical appraisal. Oxford University Press, Oxford 1988
- Golstein P, Berrier J, Rosen S, Sacks H S, Chalmers T C. A meta‐analysis of randomized control trials of progestational agents in pregnancy. Br J Obstet Gynaecol 1989; 96: 265–74
- Longnecker M P, Berlin J A, Orza M J, Chalmers T C. A meta‐analysis of alcohol consumption in relation to risk of breast cancer. JAMA 1988; 260: 652–6
- Realini J P, Goldzieher J W. Oral contraceptives and cardiovascular disease: a critique of the epidemiologic studies. Am J Obstet Gynecol 1985; 152: 729–98
- Swan S H, Petiti D B. A review of problem of bias and confounding in epidemiologic studies of cervical neoplasia and oral contraceptive use. Am J Epidemiol 1982; 115: 10–18
- Begg C B, Berlin J A. Publication bias and dissemination of clinical research. J Natl Cancer Inst 1989; 81: 107–15
- Greenland S. Quantitative methods in the review of epidemiologic literature. Epidemiol Rev 1987; 9: 1–30
- Vandenbroucke J P. Passive smoking and lung cancer: a publication bias?. Br Med J 1988; 296: 391–2
- Sillero M. Meta‐analisis de la relacion entre los contraceptives orales y los canceres de mama y cuello uterino. Doctoral Thesis., University of Granada, Granada 1989
- Franceschi S, La Vecchia C, Talamini R. Oral contraceptives and cervical neoplasia: pooled information from retrospective and prospective epidemiologic studies. Tumori 1986; 72: 21–30
- Prentice R L, Thomas D B. On the epidemiology of oral contraceptives and disease. Adv Cancer Res 1987; 47: 285–401
- Cueto‐Espinar A, Delgado‐Rodriguez M. Cancer. Medicina Preventiva y Salud Publica8th ed., G Piedrola Gil, et al. Salvat, Barcelona 1988; 716–29
- Delgado‐Rodríguez M, Sillero M, Rodríguez‐Contreras R, Lardelli P, Bueno A, Gálvez R. Contraceptivos orales y canceres de mama y cuello uterino: metaanálisis cualitativo. Toko‐Gin Pract 1990; 49: 336–44
- Weiner J M, Shirley S, Gilman N J, Stowe S M, Wolf R M. Access to data and the information explosion: oral contraceptives and risk of cancer. Contraception 1981; 24: 301–13