RT Journal Article SR Electronic T1 Ptosis JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 332 OP 340 DO 10.1136/practneurol-2011-000026 VO 11 IS 6 A1 Kate Ahmad A1 Mark Wright A1 Christian J Lueck YR 2011 UL http://pn.bmj.com/content/11/6/332.abstract AB