TY - JOUR T1 - Long-term efficacy of 1–1.2 kHz subthreshold spinal cord stimulation following failed traditional spinal cord stimulation: a retrospective case series JF - Regional Anesthesia & Pain Medicine JO - Reg Anesth Pain Med SP - 903 LP - 903 DO - 10.1136/rapm-2019-100473 VL - 44 IS - 9 AU - Simon Thomson Y1 - 2019/09/01 UR - http://rapm.bmj.com/content/44/9/903.1.abstract N2 - ER -