RT Journal Article SR Electronic T1 Neuromuscular Diseases JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1264 OP 1264 DO 10.1136/jnnp.47.11.1264 VO 47 IS 11 A1 Cm Wiles YR 1984 UL http://jnnp.bmj.com/content/47/11/1264.1.abstract AB