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Jump to: 2018 Number of items: 1. 2018Vinogradova, Y., Coupland, C. and Hippisley-Cox, J. (2018) Use of combined oral contraceptives and risk of venous thromboembolism: nested case-control studies using the QResearch and CPRD databases. BMJ, 350 (may26). h2135. ISSN 1756-1833 |