Putri, A. S. . “Left Ventricular Systolic Function and Diastolic Function Profile in Congestive Heart Failure Patients on Tangerang District General Hospital”. ARKAVI [Arsip Kardiovaskular Indonesia], vol. 3, no. 2, July 2018, pp. 219-21, https://journal.uhamka.ac.id/index.php/arkavi/article/view/5485.