Ramesh, A. G., and K. S. Ramesh. “A Prospective Study of Mannheim Peritonitis Index As a Prognostic Scale in Analysis of Outcome in Hollow Viscus Perforation”. International Surgery Journal, vol. 5, no. 4, Mar. 2018, pp. 1306-9, doi:10.18203/2349-2902.isj20180991.