Spinal Muscular Atrophy
UpToDate, Oct, Bodamer,O.A., 2022
Primary Lateral Sclerosis, Clin Features, Neuropath & Dx Criteria
Brain 115:495-520, Pringle,C.E.,et al, 1992
Explanation & Management of Neurological Disability
BMJ 294:1203-1205, Critchley,E.M.R.&Mitchell,J.D., 1987