RT Journal Article SR Electronic T1 Blank space JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP 391 OP 392 DO 10.1136/neurintsurg-2015-011785 VO 7 IS 6 A1 Michael Chen A1 James Connors YR 2015 UL http://jnis.bmj.com/content/7/6/391.abstract AB