Use of combined oral contraceptives and risk of venous thromboembolism: nested case-control studies using the QResearch and CPRD databases

Vinogradova Y., Coupland C., Hippisley-Cox J.

OBJECTIVE: To investigate the association between use of combined oral contraceptives and risk of venous thromboembolism, taking the type of progestogen into account.

DOI

10.1136/bmj.h2135

Type

Journal article

Journal

BMJ (Clinical research ed.)

Publication Date

01/01/2015

Volume

350

Permalink Original publication