3.de Bastos, M, Stegeman, BH, Rosendaal, FR, et al. Combined oral contraceptives: venous thrombosis. Cochrane Database Syst Rev 2014;19(5):194.
4.Faculty of Sexual and Reproductive Healthcare. Venous Thromboembolism (VTE) and Hormonal Contraception. November, 2014. [www.fsrh.org] 5.Faculty of Sexual and Reproductive Healthcare. UK Medical Eligibility Criteria for Contraceptive Use. May, 2016. [www.fsrh.org]
7.Gaffield, ME, Culwell, KR, Ravi, A. Oral contraceptives and family history of breast cancer. Contraception 2009;80:372–80.
9.Gallos, ID, Shehmar, M, Thangaratinam, S, et al. Oral progestogens vs levonorgestrel-releasing intrauterine system for endometrial hyperplasia: a systematic review and meta-analysis. Am J Obstet Gynecol 2010;203:547–10.
10.Arowojolu, AO, Gallo, MF, Lopez, LM, Grimes, DA, Garner, SE. Combined oral contraceptive pills for treatment of acne. Cochrane Database Syst Rev 2007;(1):CD004425.
13.Society of Obstetricians and Gynaecologists of Canada. Best Practices to Minimize Risk of Infection with Intrauterine Device Insertion. March, 2014. [www.sogc.org/wp-content/uploads] 15.Faculty of Sexual and Reproductive Health Clinical Effectiveness Unit. Antibiotic Prophylaxis for Intrauterine Contraceptive Use in Women at Risk of Bacterial Endocarditis. July, 2008. [www.fsrh.org/pdfs]