Bent Spine Syndrome
JNNP 60:51-54, Serratrice,G.,et al, 1996
Diseases of Muscles-Clinical Manifestations & Differential Diagnosis
The New Physic 263, 1967, Oct., Boshes,L., 1967
Cervical Dystonia:Clinical Findings and Associated Movement Disorders
Neurol 41:1088-1091, Jankovic,J.,et al, 1991