S. A. Ullah, F. Ahmed, N. Sultana, and S. A. Hossain, “Efficacy of combination therapy of Hyaluronic acid and Methylprednisolon verses Hyaluronic acid single therapy in knee Osteoarthritis : A comparative study”, Northern Int. Med. Coll. J., vol. 10, no. 2, pp. 366–369, Feb. 2020.