Ansari, S. , Kabir, M.F.I. , Ahmed, K. , Ahsan, S.A. , Ahmed, C.M. , Khaled, M.F.I. , Siraj, M. , Nahar, J. , Biswas, S.K. , Karna, R. , Ahsan, M.H. , Islam, R. and Hoque, M.H. 2022. Frequency of Transition of patients with NYHA class III / IV to NYHA class I / II / III of stage C and D Heart Failure with Pharmacotherapy in a Tertiary Level Hospital. University Heart Journal. 18, 1 (Jan. 2022), 14–21. DOI:https://doi.org/10.3329/uhj.v18i1.57875.