T. H. Nasser, H. D. El-Yassin, and S. Yakoob, “Β-Natriuretic Peptide Level as a Predictor for the Severity of LV Dysfunction”, J Fac Med Baghdad, vol. 49, no. 4, pp. 438–448, Jan. 2008, doi: 10.32007/jfacmedbagdad.4941336.