RT Journal Article SR Electronic T1 The changing landscape of non-invasive ventilation in amyotrophic lateral sclerosis JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 368 OP 369 DO 10.1136/jnnp-2012-302253 VO 83 IS 4 A1 Stephen C Bourke A1 Catherine L O'Neill A1 Tim L Williams A1 Edwin T Peel A1 G John Gibson A1 Christopher J McDermott A1 Pamela J Shaw YR 2012 UL http://jnnp.bmj.com/content/83/4/368.abstract AB