S. Abdul Wahid, “Age Influence on Knee Joint Flexors”, Al-Kindy Col. Med. J, vol. 8, no. 2, pp. 6–11, Dec. 2012, Accessed: Apr. 30, 2025. [Online]. Available: https://www.jkmc.uobaghdad.edu.iq/index.php/MEDICAL/article/view/573