RT Journal Article SR Electronic T1 Measuring change in amyotrophic lateral sclerosis JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1169 OP 1170 DO 10.1136/jnnp-2015-311051 VO 86 IS 11 A1 Michael Swash A1 Matthew C Kiernan YR 2015 UL http://jnnp.bmj.com/content/86/11/1169.abstract AB