Heart Rate Optimization for Heart Failure Patients in Hospital Tengku Ampuan Rahimah (HTAR), Klang. (December 2019) - Chua, P.L.; Mohd Yunus, N.A.; Tan, M.M.; Toh, S.H.; Lim, H.F.; Karunakaran, T.; Mansor, N.; Ng, G.P.L.; Jalil, S. Ab; Mageswaren, E.; Chee, K.H.