The Natural History of Primary Lateral Sclerosis
Neurol 66:647-653, Gordon,P.H.,et al, 2006
Surgical Treatment of Cervical Spondylotic Myelopathy:Time for a Controlled Trial
Neurol 42:5-13, Rowland,L.P., 1992
Primary Lateral Sclerosis, Clin Features, Neuropath & Dx Criteria
Brain 115:495-520, Pringle,C.E.,et al, 1992