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Unger MM, Möller JC, Stiasny-Kolster K, Mankel K, Berg D, Walter U, Hoeffken H, Mayer G, Oertel WH.Unger MM, et al.Mov Disord. 2008 Mar 15;23(4):596-9. doi: 10.1002/mds.21908.Mov Disord. 2008.PMID: 18175346