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World Health Organization Collaborative Study of Cardiovascular Disease and Steroid Hormone Contraception∗A full listing of participating individuals and study centers is given in the
This report describes the first study to evaluate the risks of cardiovascular disease (CVD) associated with the use of oral and injectable progestogen-only and combined injectable contraceptives. Based on combined data from Africa, Asia, Europe, and Latin America collected in the World Health Organization (WHO) Collaborative Study, odds ratios (OR) for CVD combined, strokes, venous thromboembolism...
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