Fillers
Risk of venous thromboembolism among users of third generation oral contraceptives compared with users of oral contraceptives with levonorgestrel before and after 1995: cohort and case-control analysis
BMJ 2000; 321 doi: https://doi.org/10.1136/bmj.321.7270.1190 (Published 11 November 2000) Cite this as: BMJ 2000;321:1190
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