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Can HPV vaccine cause mental retardation?

September 14, 2011 8:53 PM EDT Congresswoman Michele Bachmann said that, after the debate this week, a woman approached her in tears and said her daughter was given the HPV vaccine and suffered "mental retardation" as a result. Dr. Jon LaPook reports on whether there is any science behind her comments. (Sept. 14) (CBS News)

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