Akram, M., A. L. Sami, R. M. Arshad, and A. Hanif. “Posterior Approach for Intra-Articular Steroid Injection for Shoulder Arthropathy and Subacromial Impingement Syndrome: Simple Techniques”. Annals of King Edward Medical University, vol. 16, no. 2, 1, p. 127, doi:10.21649/akemu.v16i2.197.