A. Ghaffar, M. M. Alam, W. 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”, JHRR, vol. 3, no. 2, pp. 935–940, Dec. 2023.