Huber, JF, E Dabis, J Huesler, and GB Ruflin. “Symptom Assessment in Lumbar stenosis/Spondylolysis - Patient Questionnaire Versus Physician Chart”. Swiss Medical Weekly 139, no. 4142 (October 17, 2009): 610–610. Accessed May 3, 2024. https://smw.ch/index.php/smw/article/view/1028.