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OBJECTIVE To determine the influence of oral contraceptives (particularly those containing modern progestins) on the risk for ischaemic stroke in women aged 16-44 years. DESIGN Matched case-control(More)
A matched case-control study was performed between 1993 and 1996 in 16 centers in the United Kingdom, Germany, France, Switzerland, and Austria. The objective was to determine the influence of oral(More)