AUTHOR=Liebig Lukas , Gräfe Willy , Berth Hendrik , Birkás Béla , Faubl Nora , Zelko Erika , Balogh Erika , Riemenschneider Henna TITLE=Changes in health behaviour of medical students during and after the COVID-19 pandemic—focus on physical activity, screen time, sleep duration, unhealthy foods, alcohol, and tobacco JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1545295 DOI=10.3389/fpubh.2025.1545295 ISSN=2296-2565