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MLA Citation
J. Dutton et al.. “The accuracy of pre-operative (P)-POSSUM scoring and cardiopulmonary exercise testing in predicting morbidity and mortality after pancreatic and liver surgery: A systematic review.” Annals of medicine and surgery, vol. 62, 2021, pp. 1–9. http://access.bl.uk/ark:/81055/vdc_100122198220.0x00000c