RT Journal Article SR Electronic T1 Patients with prolonged disorders of consciousness: more than a clinical challenge JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 2 OP 3 DO 10.1136/practneurol-2013-000781 VO 14 IS 1 A1 Wade, Derick YR 2014 UL http://pn.bmj.com/content/14/1/2.abstract AB