AUTHOR=Chen Xiu-Mei , Wang Li-Feng , Liao Xiao-Ling , Wang Shuai , Yang Lan , Chen I-Hua TITLE=The relationship between problematic internet use and psychological distress in older Chinese teachers (40+) during different stages of the COVID-19 pandemic: three cross-sectional studies JOURNAL=Frontiers in Public Health VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2024.1442852 DOI=10.3389/fpubh.2024.1442852 ISSN=2296-2565