RT Journal Article SR Electronic T1 Flail arm syndrome: a distinctive variant of amyotrophic lateral sclerosis JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 950 OP 951 DO 10.1136/jnnp.65.6.950 VO 65 IS 6 A1 M T M HU A1 C M ELLIS A1 A AL-CHALABI A1 P N LEIGH A1 C E SHAW YR 1998 UL http://jnnp.bmj.com/content/65/6/950.abstract AB