Y. Briantito and A. . Wahyudi, “Evaluation Of The Use Of The Mannheim Peritonitis Index (MPI) As A Predictor Of Mortality And Morbidity In Peritonitis Patients Due To Hollow Organ Perforation At Kediri Baptist Hospital”, Eduvest, vol. 5, no. 10, pp. 12065–12073, Oct. 2025.