Ghaffar, Abdul, Muhammad Mahmood Alam, Waseem Akhtar, Ishrat Fatima, Muhammad Burhan, and Muhammad Mustafa Gul. “Correlation of Numeric Pain Rating Scale and Oswestry Disability Index of Non-Specific Low Back Pain Among Nursing Staff”. Journal of Health and Rehabilitation Research 3, no. 2 (December 30, 2023): 935–940. Accessed December 26, 2024. https://jhrlmc.com/index.php/home/article/view/237.