AUTHOR=Méndez-Chacón Ericka TITLE=Construct validity of the self-report instrument of perceived stress in the general Costa Rican population of retirement age: CRELES study JOURNAL=Frontiers in Public Health VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1568416 DOI=10.3389/fpubh.2025.1568416 ISSN=2296-2565