References
- Umapathi T, Chaudhry V, Cornblath D, Drachman D, Griffin J, Kuncl R. Head drop and camptocormia. I Neurol Neurosurg Psychiatry 2002;73:1 —7.
- Lange DJ, Fetell MR, Lovelace RE, Rowland LR. The floppy head syndrome. Ann Neurol 1986;20:133.
- Katz JS, Wolfe GI, Burns DK, Bryan WW, Fleckenstein JL, Barohn RJ. Isolated neck extensor myopathy: a common cause of dropped head syndrome. Neurology 1996;46:917–21.
- Suarez GA, Kelly JJ Jr. The dropped head syndrome (com-ments) . Neurology 1992;42:1625 — 7.
- Serratrice G, Pouget J, Pellissier JF. Bent spine syndrome. I Neurol Neurosurg Psychiatry 1996;60:51 —4.
- Swash M. Dropped head and bent spine syndromes; axial myopathies? Lancet 1998;352:758.
- Oerlemans WGH, de Visser M. Dropped head syndrome and bent-spine syndrome: two separate clinical entities or different manifestations of axial myopathy? 3 Neurol Neurosurg Psychiatry 1998;65: 258–9.
- Kiuru S, Iivanainen M. Camptocormia, a new side-effect of sodium valproate. Epilepsy Res 1987;1 (4): 254 — 7.
- Gourie-Devi M, Nalini A, Sandhya S. Early or late appearance of 'dropped head syndrome' in amyotrophic lateral sclerosis. I Neurol Neurosurg Psychiwy 2003;74:683— 6.