| http://www.w3.org/ns/prov#value | - Researchers have produced an experimental vaccine that is 100 percent effective in preventing two types of cervical cancer caused by a sexually-transmitted virus, the New Jersey-based pharmaceutical company Merck and Co., Inc., announced on Thursday.Over 12,000 women aged 16 to 26 in 13 different countries participated in the study of the Gardasil vaccine.
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