Ullah, S.A., Ahmed, F., Sultana, N. and Hossain, S.A. 2020. Efficacy of combination therapy of Hyaluronic acid and Methylprednisolon verses Hyaluronic acid single therapy in knee Osteoarthritis : A comparative study. Northern International Medical College Journal. 10, 2 (Feb. 2020), 366–369. DOI:https://doi.org/10.3329/nimcj.v10i2.45429.