Focal, Steroid Responsive Myositis Causing Dropped Head Syndrome
Muscle & Nerve 22:769-771, Biran,I.,et al, 1999
Isolated Neck Extensor Myopathy:A Common Cause of Dropped Head Syndrome
Neurol 46:917-921, Katz,J.S.,et al, 1996
The Dropped Head Syndrome
Neurol 42:1625-1627, Suarez,G.A.&Kelly,J.J., 1992
Rigid Spine Syndrome and Rigid Spine Sign in Myopathies
J Child Neurol 4:273-282, Merlini,L.,et al, 1989