RT Journal Article SR Electronic T1 Trochlear nerve palsy JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP practneurol-2017-001726 DO 10.1136/practneurol-2017-001726 A1 Tarig Mohammed Abkur YR 2017 UL http://pn.bmj.com/content/early/2017/09/16/practneurol-2017-001726.abstract AB