| http://www.w3.org/ns/prov#value | - More teen girls now use the best kinds of birth control, a new government study says.About 60 percent of teen girls who have sex use the most effective kinds of contraception, including the pill and patch.he is up from the mid-90s, when less than half were using the best kinds, the Centers for Disease Control and Prevention study found.The trend in better contraception is helping to drive down th
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