Sun, M. (2021) “The Left Atrial Function as a Marker for the Severity of Heart Failure with Preserved Ejection Fraction”, Cardiology and Cardiovascular Medicine, 5(3), pp. 300–314. Available at: http://www.fortunejournals.org/ojs/index.php/ccm/article/view/16075 (Accessed: 21 June 2026).