title: Erratum to: Substantia nigra hyperechogenicity in hypokinetic Huntington's disease patients.
authors: Department of Neurology, University Hospital Freiburg, Breisacher Strasse 64, 79106, Freiburg, Germany.
authors: Johann
authors: J
authors: Lambeck
authors: Wolf-Dirk
authors: WD
authors: Niesen
authors: Matthias
authors: M
authors: Reinhard
authors: Cornelius
authors: C
authors: Weiller
authors: Matthias
authors: M
authors: Dose
authors: Birgit
authors: B
authors: Zucker