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

Journal: BMJ Authors: Lianne Parkin, Katrina Sharples, Rohini K Hernandez, Susan S Jick NLM Citation: Parkin L, Sharples K, Hernandez RK, Jick SS. Risk of venous thromboembolism in users of oral contraceptives containing…