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Li, Hailing and Cheong, Jadeera Phaik Geok (2022) The impact of the COVID-19 pandemic on the physical fitness of primary school students in China based on the Bronfenbrenner ecological theory. Frontiers in Psychology, 13. ISSN 1664-1078, DOI https://doi.org/10.3389/fpsyg.2022.896046.