2020 No https://doi.org/10.1080/02770903.2019.1590591 Li, Tian Asia Experimental Observational Epidemiology Study Exposure Study Students Middle/Jr High (6-8) Temperature Humidity Carbon Dioxide (CO2) Particulate Matter (PM) Ozone (O3) Nitrogen Dioxide (NO2) Moisture/Water quality Sulfur dioxide (SO2) Respiratory symptoms Air pollution Children Indoor Longitudinal study Particulate matter (PM) Respiratory symptoms Two-year cohort study of 1,325 Chinese junior high students examined dampness, redecoration, and indoor pollutants; found links between school environmental factors and respiratory symptom onset, highlighting school air quality intervention needs.