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Natural contraception using the Billings ovulation method

E Attar1, S Gokdemirel, H Serdaroglu

  • 1Division of Reproductive Endocrinology and Infertility, Istanbul Medical School, Istanbul University, Turkey.

The European Journal of Contraception & Reproductive Health Care : the Official Journal of the European Society of Contraception
|August 31, 2002
PubMed
Abstract

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