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High-risk strains of the virus — a cause of cervical and vaginal cancers, and cancer of the penis — infect 25.1 percent of men and 20.4 percent of women.
www.nytimes.com
High-risk strains of the virus — a cause of cervical and vaginal cancers, and cancer of the penis — infect 25.1 percent of men and 20.4 percent of women.
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