AUTHOR=Ramos-Rincón José-Manuel , Sánchez-Paya José , González-De-La-Aleja Pilar , Rodríguez-Díaz Juan-Carlos , Merino Esperanza 

TITLE=A national population-based study of mortality and risk factors in COVID-19-hospitalized patients in Spain (2020–2021)

JOURNAL=Frontiers in Public Health

VOLUME=13

YEAR=2025

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1488283

DOI=10.3389/fpubh.2025.1488283

ISSN=2296-2565