Diagnosis and Management of Lumbar Spine StenosisJAMA 303:71-72, Haig,A. &Tomkins,C., 2010
Low Back PainNEJM 344:363-370, Deyo,R.A. &Weinstein,J.N., 2001
Back Pain & SciaticaNEJM 318:291-300, Frymoyer,J.W., 1988