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BMJ. 2011 Apr 21;342:d2139. doi: 10.1136/bmj.d2139.

Risk of venous thromboembolism in users of oral contraceptives containing drospirenone or levonorgestrel: nested case-control study based on UK General Practice Research Database.

Parkin L, Sharples K, Hernandez RK, Jick SS

Source:

https://doi.org/10.1136/bmj.d2139

PubMed:

Research Library

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