Gray matter atrophy and freezing of gait in Parkinson's disease: Is the evidence black-on-white?
Herman T, Rosenberg-Katz K, Jacob Y, Giladi N, Hausdorff JM. Gray matter atrophy and freezing of gait in Parkinson's disease: Is the evidence black-on-white? Mov Disord. 2014 Jan; 29(1):134-9.