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The venous thrombotic risk of oral contraceptives, effects of oestrogen dose and progestogen type: results of the MEGA case-control study

Objective To assess the thrombotic risk associated with oral contraceptive use with a focus on dose of oestrogen and type of progestogen of oral contraceptives available in the Netherlands.Design Population based case-control study.Setting Six participating anticoagulation clinics in the Netherlands...

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Bibliographic Details
Published in:BMJ 2009-08, Vol.339 (7720), p.561-561
Main Authors: van Hylckama Vlieg, A, Helmerhorst, F M, Vandenbroucke, J P, Doggen, C J M, Rosendaal, F R
Format: Article
Language:English
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Summary:Objective To assess the thrombotic risk associated with oral contraceptive use with a focus on dose of oestrogen and type of progestogen of oral contraceptives available in the Netherlands.Design Population based case-control study.Setting Six participating anticoagulation clinics in the Netherlands (Amersfoort, Amsterdam, The Hague, Leiden, Rotterdam, and Utrecht).Participants Premenopausal women
ISSN:0959-8138
0959-535X
1468-5833
1756-1833
DOI:10.1136/bmj.b2921