Clinical Characteristics and Risk Factors for Mortality in Very Old Patients Hospitalized With COVID-19 in Spain.
J Gerontol A Biol Sci Med Sci. 2021 Feb 25;76(3):e28-e37. doi: 10.1093/gerona/glaa243.
J Gerontol A Biol Sci Med Sci. 2021.
PMID: 33103720
Free PMC article.