Low Back Pain
NEJM 344:363-370, Deyo,R.A. &Weinstein,J.N., 2001
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Arch Int Med 160:237-240, Pullarkat,V.A.,et al, 2000
Spinal Cord Compression from Epidural Metastases
NEJM 327:614-619, Byrne,T.N., 1992