KUMAR, L.; SINGH, S.; PRATAP, D.; SINGH, K. K.; NAYAK, S.; KUMAR, S.; TRIPATHI, U. Comparison of predictive values of Mannheim peritonitis index, acute physiology and chronic health evaluation-II and Portsmouth-POSSUM scoring systems for prognosis of mortality in patients with perforation peritonitis. International Journal of Research in Medical Sciences, [S. l.], v. 10, n. 5, p. 1059–1065, 2022. DOI: 10.18203/2320-6012.ijrms20221176. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/10763. Acesso em: 14 oct. 2025.