AUTHOR=Mahmoud Mona , Carmisciano Luca , Tagliafico Luca , Muzyka Mariya , Rosa Gianmarco , Signori Alessio , Bassetti Matteo , Nencioni Alessio , Monacelli Fiammetta , The GECOVID Study Group TITLE=Patterns of Comorbidity and In-Hospital Mortality in Older Patients With COVID-19 Infection JOURNAL=Frontiers in Medicine VOLUME=8 YEAR=2021 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2021.726837 DOI=10.3389/fmed.2021.726837 ISSN=2296-858X