2024 Yes Indoor exposure levels of radon in dwellings, schools, and offices in China from 2000 to 2020: A systematic review https://onlinelibrary.wiley.com/doi/epdf/10.1111/ina.12920 Su, Chunxiao Asia Experimental Epidemiological Ventilation rates Temperature Radon China Climate region Exposure level Indoor radon Influencing factor Systematic review of 2000-2020 studies found average indoor radon levels in Chinese schools at 56.1 Bq/m³. Higher concentrations were linked to colder climates, tight ventilation, and new decoration. Findings highlight the need for improved monitoring. 2021