Top talk radio host Rush Limbaugh called on DNC chief Howard Dean to release his medical records yesterday, after Dean said he was standing by his false allegation that Limbaugh was a cocaine addict. "It might be helpful if we could see his medical records," the radio host told his audience. "It might be helpful if we could get Dean's medical records and plaster them all over CNN because we won't really know the truth about anything until we get these medical records." Citing an interview last year where Dean admitted he had a drinking problem during his college days,...