Paul, V. A., Anusha, A. and Sarath Chandra, A. (2020) “Evaluation of the validity of POSSUM and P-POSSUM score in predicting the risk of morbidity and mortality respectively in patients undergoing emergency laparotomy”, International Surgery Journal, 7(10), pp. 3224–3229. doi: 10.18203/2349-2902.isj20203968.