M. M. Khalil, A. F. Rahman, C. M. Ahmed, S. M. Iqbal, and K. S. Haque, “Incidence of ’Precordial ST-Segment Depression’ in Acute Inferior Myocardial Infarction”, Univ. Heart J., vol. 6, no. 1, pp. 21–22, Mar. 2011.