Algawwam, Hayder Ghali, et al. “Ultrasound Guided Platelets Rich Plasma Injection As Pain Management Method for Knee Pain in Partial Medial Collateral Ligament Injury”. Journal of Medical and Pharmaceutical Sciences, vol. 5, no. 1, Mar. 2021, pp. 29-38, https://doi.org/10.26389/AJSRP.H070121.