RT Journal T1 Either Surgery or Nonoperative Treatment Led to Improvement in Intervertebral Disc Herniation JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2007 FD May 1 VO 89 IS 5 SP 1139 OP 1139 DO 10.2106/JBJS.8905.ebo3 UL http://dx.doi.org/10.2106/JBJS.8905.ebo3 AB