Comparison of teicholz versus biplane simpson method in the assessment of left ventricular volumes and ejection fraction among healthy subjects. (December 2021) - Chung, B.K.; Oon, Y.Y.; Thien, L.K.; Pang, I.X.; Chen, L.S.; Ling, H.S.; Chow, H.B.; Chandan, D.B.; Tan, C.T.; Koh, K.T.; Cham, Y.L.; Said, A.; et al.