M. Rashid, W. Iqbal, A. W. Butt, O. Jamshed, M. B. Noor, and S. A. A. Mehdi, “Comparison Between Intra-Articular Steroid Injection And Ultrasound Therapy in Management of Chronic Knee Osteoarthritis”, PAFMJ, vol. 72, no. 1, pp. 181–84, Feb. 2022.