Tiwari, A., and A. Thora. “Randomised Controlled Trial Comparing the Intra-Articular Hyaluronic Acid Versus Intra-Articular Steroid in Osteoarthritis of Knee”. International Journal of Research in Orthopaedics, vol. 4, no. 4, June 2018, pp. 587-90, doi:10.18203/issn.2455-4510.IntJResOrthop20182020.