RT Journal Article SR Electronic T1 Letter from Antarctica JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 392 OP 394 DO 10.1136/practneurol-2012-000401 VO 12 IS 6 A1 Gavin Francis YR 2012 UL http://pn.bmj.com/content/12/6/392.abstract AB