Gokcek, Erhan, Hakan Akelma, and Ayhan Kaydu. “Assessment of Sleep and Life Qualities of Patient With Chronic Low Back Pain; Single-Centered, Prospective Observational Study”. International Journal of Medical Science and Clinical Invention 6, no. 1 (January 30, 2019): 4251–4257. Accessed July 27, 2024. https://valleyinternational.net/index.php/ijmsci/article/view/1815.