title: Differentiating atypical parkinsonian syndromes--a way forward?
authors.affiliation: Department of Neurology, University of Tennessee Health Science Center Memphis, Tennessee.
authors.forename: Ronald F
authors.initials: RF
authors.lastname: Pfeiffer
mesh_terms: D066128:Gray Matter / Q000473:pathology*; D006801:Humans; D019578:Multiple System Atrophy / Q000175:diagnosis*; D020734:Parkinsonian Disorders / Q000175:diagnosis*; D013494:Supranuclear Palsy, Progressive / Q000175:diagnosis*