El Khoury, J., R. Bachnak, H. El Assaad, N. Damaj, and J. Terro. “Comorbidities and Negative Prognostic Factors in Lebanese Patients Presenting With Acute Decompensated Heart Failure With Preserved Ejection Fraction: A Multicenter Retrospective Study”. International Journal of Clinical Research, vol. 1, no. 1, Feb. 2021, pp. 124-3, doi:10.38179/ijcr.v1i1.4.