Ali Gür, Kemal Nas, Remzi Çevik, Ferda Erdoğan, and A. Jale Saraç. 2000. “ETIOLOGICAL ASSESSMENT OF OUR CHRONIC LOW BACK PAIN PATIENTS”. Archives of Rheumatology 15 (3):191-98. http://anadolupsikiyatri.net/index.php/pub/article/view/29.