Primary Lateral Sclerosis, Clin Features, Neuropath & Dx Criteria
Brain 115:495-520, Pringle,C.E.,et al, 1992
Neurologic Aspects of Cobalamin Deficiency
Medicine 70:229-245, Healton,E.B.,et al, 1991
Hallervorden-Spatz Syndrome and Brain Iron Metabolism
Arch Neurol 48:1285-1293, Swaiman,K.F., 1991