Contraceptive efficacy of testosterone-induced azoospermia in normal men

@article{Fertility1990ContraceptiveEO,
  title={Contraceptive efficacy of testosterone-induced azoospermia in normal men},
  author={World Health Organisation Task Force ON Methods For The Fertility},
  journal={The Lancet},
  year={1990},
  volume={336},
  pages={955-959}
}
A multicentre study (ten centres) in seven countries was done to assess the contraceptive efficacy of hormonally-induced azoospermia in 271 healthy fertile men. Each subject received 200 mg testosterone enanthate weekly by intramuscular injection. 157 men (cumulative rate at 6 months 65%) became azoospermic in three consecutive semen samples. These men entered a 12-month efficacy phase during which continuing testosterone injections were the only form of contraception. There was 1 pregnancy… Expand

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