Epidural steroid injections are associated with less improvement in patients with lumbar spinal stenosis: a subgroup analysis of the spine patient outcomes research trial.

Radcliff K, Kepler C, Hilibrand A, Rihn J, Zhao W, Lurie J, Tosteson T, Vaccaro A, Albert T, Weinstein J. Epidural steroid injections are associated with less improvement in patients with lumbar spinal stenosis: a subgroup analysis of the spine patient outcomes research trial. Spine (Phila Pa 1976). 2013 Feb 15; 38(4):279-91.

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