An historical look at a contemporary question: the cervical cap.
Zimmet
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JA
Reagan
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PA
D003274:Contraceptive Devices, Female / Q000009:adverse effects / Q000266:history*; D005060:Europe; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D014481:United States