Haller R-m

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A new form of contraception, a cervical button consisting of acetylsalicylic acid at 3/5 the amount in a regular aspirin, was used by 40 women (aged 15-44) for 4 months. The composition of the pill mixes with the sperm and destroys their fluidity and mobility. The acidity which develops within minutes after placement remains at least 12 hours. Use of the(More)
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