Miguel, D., Ramos, P., Oliveira, J., Ferreira, C. and Cruz, F. (2020) “OS-MRS as a predictor of hospital length of stay – a retrospective audit of patients submitted to elective gastric bypass surgery”, Anaesthesia, Pain & Intensive Care, 24(1), pp. 54-58. doi: 10.35975/apic.v24i1.1226.