Comment on

• Testing objective measures of motor impairment in early Parkinson's disease: Feasibility study of an at-home testing device.

  Goetz CG, Stebbins GT, Wolff D, DeLeeuw W, Bronte-Stewart H, Elble R, Hallett M, Nutt J, Ramig L, Sanger T, Wu AD, Kraus PH, Blasucci LM, Shamim EA, Sethi KD, Spielman J, Kubota K, Grove AS, Dishman E, Taylor CB. Goetz CG, et al. Mov Disord. 2009 Mar 15;24(4):551-6. doi: 10.1002/mds.22379. Mov Disord. 2009. PMID: 19086085 Free PMC article.