URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/an-electrocardiographic-score-to-predict-pulmonary-hypertension-in-children-with-atrial-septal-defect-dcfcd07e645d245babe887e5e2daa016/a6824cd3-4b9b-11ee-abf0-e4434b0aade8