2012年5月11日 星期五

BBC News - Home: Vaginal rings 'riskier than pill'

BBC News - Home
The latest stories from the Home section of the BBC News web site.
thumbnail Vaginal rings 'riskier than pill'
May 11th 2012, 04:01

Using skin patches or vaginal rings as contraception comes with a higher risk of developing serious blood clots than the pill, according to a study.

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