Mathew, A., John, J. and Sasikumar, A. (2019) “Validity of mannheim peritonitis index in predicting outcome of patients with perforative peritonitis in a tertiary care centre Kerala, India”, International Journal of Research in Medical Sciences, 7(11), pp. 4140–4143. doi: 10.18203/2320-6012.ijrms20194981.