DR. P.KIRANMAI M.D. “SERIAL ESTIMATION OF SERUM MAGNESIUM, CALCIUM, SODIUM AND POTASSIUM LEVELS IN MYOCARDIAL INFARCTION”. International Journal of Pharma and Bio Sciences, vol. 4, no. 2, June 2013, pp. 1190-5, https://ijpbs.net/index.php/journal/article/view/2410.