Fertility control by intrauterine release of progesterone.


The contraceptive effectiveness of small amounts of progesterone released in the uterine cavity via a silastic progesterone T IUD was studied. Over 1600 woman-months of use in 249 women were evaluated. The amount of progesterone remaining in 14 capsules revoved 161-200 days after insertion was variable, indicating a possible effect of individual uterine… (More)


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