Radiography of the Lumbar Spine in Primary Care Patients with Low Back Pain: Randomised Controlled Trial
BMJ 322:400-405, Kendrick,D.,et al, 2001
Patterns of Ordering Diagnostic Tests for Patients with Acute Low Back Pain
Ann Int Med 125:807-814, Carey,T.S.,et al, 1996
Tethered Cord Syndrome in Adults
J Neurosurg 57:32-47, Pang,D.&Wilberger,J.E.Jr., 1982