References

¹ Ulipristal acetate prevents ovulation more effectively than levonorgestrel: analysis of pooled data from three randomized trials of emergency contraception regimens☆ Vivian Brachea,⁎, Leila Cochona, Maëva Deniaudb, Horacio B. Croxattoc aPROFAMILIA, Santo Domingo, Dominican Republic bMDSTAT Consulting, Melun, France cUniversidad Andres Bello, Santiago, Chile Received 31 January 2013; revised 8 May 2013; accepted 16 May 2013.

² Gemzell-Danielsson K et al. Gynecol Endocrinol. 2014; 30:685-7.

³ Ulipristalacetat verhindert den Eisprung wirksamer als Levonorgestrel: Analyse der gepoolten Daten aus drei randomisierten Studien zu Notfallkontrazeptionsschemata☆ Vivian Brachea,⁎, Leila Cochona, Maëva Deniaudb, Horacio B. Croxattoc 2013.

⁴ Raith-Paula E et al. Natürliche Familienplanung heute; Springer Science & Business Media. 2008.

⁵ Baird, D. D. et al. Application of a method for estimating day of ovulation using urinary estrogen and progesterone metabolites. Epidemiologie. 1995; 6(5): 547 – 550.

⁶ Emergency contraception: potential role of ulipristal acetate, Gemzell et Al, International Journal of Women’s Health, April 17, 2010: 53-61.

⁷ Trussell, J. et al. New estimates of the effectiveness of the Yuzpe regimen of emergency contraception. Contraception. 1998; 57(6): 363 – 369.

⁸ Glasier AF et al: Ulipristal acetate versus levonorgestrel for emergency contraception: a randomised non-inferiority trial and meta-analysis.Lancet 2010; 375: 555-562.

⁹ Rabe, T. et al. Emergency contraception – an update. Joint statement of the German Society for Gynecological Endocrinology and Reproductive Medicine (DGGEF) e. V. and the Professional Association of Gynecologists (BVF) e.V. Frauenarzt 2013; 54: 107-113.

¹⁰ World Health Organization. Medical Eligibility Criteria for contraceptive use Fifth edition 2015 http://apps.who.int/iris/bitstream/10665/172915/1/WHO_RHR_15.07_eng.pdf, Halpern V, Raymond EG, Lopez LM. Repeated use of pre- and post-coital hormonal contraception for prevention of pregnancy. Cochrane Database of Systematic Reviews 2010;(1):CD007595.