Frans M. Helmerhorst

The risk of venous thrombosis in women over 50 years old using oral contraception or postmenopausal hormone therapy

R.E.J. Roach, Willem M. Lijfering, Frans M. Helmerhorst, Suzanne C. Cannegieter, Frits R. Rosendaal, Astrid van Hylckama Vlieg (2012). The risk of venous thrombosis in women over 50 years old using oral contraception or postmenopausal hormone therapy. Journal of Thrombosis and Haemostasis, 11(1), pp. 124-131, DOI: 10.1111/jth.12060.