Sciatica
NEJM 372:1240-1248, Ropper, A.H. & Zafonte, R.D., 2015
Symptomatic Nerve Root Changes on Contrast-Enhanced MR Imaging After Surgery for Lumbar Disk Herniation
AJNR 30:1062-1067,1068, Lee,Y.S.,et al, 2009
Low Back Pain
NEJM 344:363-370, Deyo,R.A. &Weinstein,J.N., 2001