RT Journal Article SR Electronic T1 Optimizing tibial P37 somatosensory evoked potentials for intraoperative monitoring JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 116 OP 117 VO 10 IS 1 A1 MacDonald, David B. YR 2005 UL http://nsj.org.sa/content/10/1/116.abstract AB