Merza, W. M. “Relation of Serum of N-Terminal Pro-Brain Natriuretic Peptide and Echocardiographic Parameters With Age in Acute Coronary Syndrome Patients”. International Journal of Health Sciences, vol. 6, no. S5, June 2022, pp. 6173-9, doi:10.53730/ijhs.v6nS5.10044.