Oral contraceptive containing natural estradiol for premenopausal women.

@article{Hirvonen1995OralCC,
  title={Oral contraceptive containing natural estradiol for premenopausal women.},
  author={Erkki J Hirvonen and H O Allonen and Maarit Anttila and Y Kulmala and Tapio Ranta and H Rautiainen and Pirkko Sipil{\"a} and Pekka Yl{\"o}stalo},
  journal={Maturitas},
  year={1995},
  volume={21 1},
  pages={27-32}
}
An open multicenter trial was performed in six centers in Finland to study the efficacy, safety and acceptability of a new biphasic oral contraceptive pill containing natural estradiol and cyproterone acetate. The participants were 288 women with a mean age of 39.3 +/- 3.4 years (range 30-49) who were willing to use the new pill as their only contraceptive method. In total, 23% of the women were smokers. The cumulative experience was 2800 treatment cycles during the first year. The net 12-month… CONTINUE READING
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