2021 Yes https://doi.org/10.3390/atmos12111421 Lu, Khang H. Asia Exposure Study Students Elementary (K-5) Volatile Organic Compounds (VOCs) Primary schools Volatile organic compounds (VOCs) Btex Indoor air Health risk assessment Indoor and outdoor VOCs were sampled in 4 Vietnam primary schools. Highest VOC levels found indoors; health risk modeled for students using measured concentrations. Study informs air quality management in urban schools.