Observational Study
Copyright ©The Author(s) 2020.
World J Clin Cases. Jun 26, 2020; 8(12): 2542-2553
Published online Jun 26, 2020. doi: 10.12998/wjcc.v8.i12.2542
Figure 2
Figure 2 Flow chart of patient recruitment, examination, and grouping. LVEF: Left ventricular ejection fraction.