CUSTODERO, C.; CELLA, A.; VERONESE, N.; AZZINI, M.; FIMOGNARI, F.; MATTACE-RASO, F.; POLIDORI, M. C.; SABBĂ€, C.; PILOTTO, A. The Multidimensional Prognostic Index (MPI) for the prognostic stratification of hospitalized older patients with COVID-19: a prospective multicenter observational cohort study. Objectives, study design and expected outcomes (MPI_COVID-19). Geriatric Care, v. 6, n. 2, 27 Apr. 2020.