Rumanti, Erika Rizky. “Measurement Of The Stenosis Mitral by Using The Method Flow Convergence Or Proximal Isovelocity Area (PISA) And Planimetri”. ARKAVI [Arsip Kardiovaskular Indonesia] 3, no. 2 (July 1, 2018): 211–2013. Accessed July 16, 2024. https://journal.uhamka.ac.id/index.php/arkavi/article/view/5482.