doi.org/10.1016/j.contraception.2009.05.131, hdl.handle.net/1765/27636
Contraception
Erasmus MC: University Medical Center Rotterdam

van Vliet, H., Rosendaal, F. R., Fleischer, K., Rosing, J., & Helmerhorst, F. M. (2010). Effects of the contraceptive vaginal ring, the contraceptive transdermal patch and combined oral contraceptives on markers of hemostasis. Contraception, 81(1), 88–89. doi:10.1016/j.contraception.2009.05.131