RT Journal Article SR Electronic T1 Interspinous process device versus standard conventional surgical decompression for lumbar spinal stenosis results in increased reoperation rates and costs without improving patient outcomes JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 136 OP 136 DO 10.1136/eb-2013-101689 VO 19 IS 4 A1 Zachary A Smith YR 2014 UL http://ebm.bmj.com/content/19/4/136.abstract AB