Cervical Dystonia:Clinical Findings and Associated Movement Disorders
Neurol 41:1088-1091, Jankovic,J.,et al, 1991
Life-Threatening Cranial Dystonia Following Trihexyphenidyl Withdrawal
Movement Disorders 4:349-353, Gimenez-Roldan,S.,et al, 1989
Antecollis in Parkinsonism
Lancet 1:1320-1321, Jorens,P.G.,et al, 1989