Reversible Chorea and Focal Dystonia in Vitamin B12 Deficiency
NEJM 347:295, Pacchetti,C.,et al, 2002
Essential Tremor:Clinical Correlates in 350 Patients
Neurol 41:234-238, Lou,J.&Jankovic,J., 1991
Dystonia in Untreated Parkinsonism
Clin Neuropharmacol 9:293-297, LeWitt,P.A.,et al, 1986