Jeremiah B*, Mukhtar Z, Ketaren AP, Raynaldo AH, Haykal TB & Hasan H, “ASSESSMENT OF GLOBAL LONGITUDINAL STRAIN AS A PREDICTOR OF LESION SIGNIFICANCE IN STABLE CORONARY HEART DISEASE PATIENTS WITH PRESERVED EJECTION FRACTION AT ADAM MALIK HOSPITAL MEDAN”, IJRSM, vol. 9, no. 2, pp. 8–13, Feb. 2022.