AUTHOR=Josefsson Kristina Areskoug , Krettek Alexandra TITLE=Staying True to the Core of Public Health Science in Times of Change JOURNAL=Frontiers in Public Health VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2021.653797 DOI=10.3389/fpubh.2021.653797 ISSN=2296-2565