RT Journal Article SR Electronic T1 The marrow of life JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP 1 OP 1 DO 10.1136/neurintsurg-2011-010166 VO 4 IS 1 A1 Robert W Tarr YR 2012 UL http://jnis.bmj.com/content/4/1/1.abstract AB