RT Journal Article SR Electronic T1 Six issues in muscle disease JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP jnnp-2017-315771 DO 10.1136/jnnp-2017-315771 A1 Michael Swash YR 2017 UL http://jnnp.bmj.com/content/early/2017/05/13/jnnp-2017-315771.abstract AB