Sanjay Maitra, et al. “Efficacy of the P-POSSUM Scoring System in Prediction of Post-Operative Mortality and Morbidity in Patients Undergoing Emergency Exploratory Laparotomy in a Tertiary Institute in East India”. Asian Journal of Medical Sciences, vol. 13, no. 4, Apr. 2022, pp. 23-30, https://nepjol.info/index.php/AJMS/article/view/43344.