The history of steroidal contraceptive development: the progestins.
Perone
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Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Texas, Houston.
D000818:Animals; D049673:History, 20th Century; D006801:Humans; D011372:Progestins / Q000266:history* / Q000302:isolation & purification
D011372:Progestins