[1] Cao DW, Zheng DS, Qian ZM, Shen HQ, Liu Y, Liu QY, et al. Ambient sulfur dioxide and hospital expenditures and length of hospital stay for respiratory diseases: a multicity study in China. Ecotoxicol Environ Saf 2022;229:113082. http://dx.doi.org/10.1016/j.ecoenv.2021.113082CrossRef
[2] Cao DW, Li DY, Wu YL, Qian ZM, Liu Y, Liu QY, et al. Ambient PM2.5 exposure and hospital cost and length of hospital stay for respiratory diseases in 11 cities in Shanxi province, China. Thorax 2021;76(8):743. http://dx.doi.org/10.1136/thoraxjnl-2020-215838CrossRef
[3] Wang LJ, Liu C, Meng X, Niu Y, Lin ZJ, Liu YN, et al. Associations between short-term exposure to ambient sulfur dioxide and increased cause-specific mortality in 272 Chinese cities. Environ Int 2018;117:33 − 9. http://dx.doi.org/10.1016/j.envint.2018.04.019CrossRef
[4] Yang Y, Qi JL, Ruan ZL, Yin P, Zhang SY, Liu JM, et al. Changes in life expectancy of respiratory diseases from attaining daily PM2.5 Standard in China: a nationwide observational study. Innovation 2020;1(3):100064. http://dx.doi.org/10.1016/j.xinn.2020.100064CrossRef
[5] Carpenter BH, Chromy JR, Bach WD, LeSourd DA, Gillette DG. Health costs of air pollution: a study of hospitalization costs. Am J Public Health 1979;69(12):1232 − 41. http://dx.doi.org/10.2105/AJPH.69.12.1232CrossRef
[6] Guo HB, Chen MX. Short-term effect of air pollution on asthma patient visits in Shanghai area and assessment of economic costs. Ecotoxicol Environ Saf 2018;161:184 − 9. http://dx.doi.org/10.1016/j.ecoenv.2018.05.089CrossRef
[7] Frampton MW, Boscia J, Roberts NJ Jr, Azadniv M, Torres A, Cox C, et al. Nitrogen dioxide exposure: effects on airway and blood cells. Am J Physiol Lung Cell Mol Physiol 2002;282(1):L155 − 65. http://dx.doi.org/10.1152/ajplung.2002.282.1.L155CrossRef
[8] Hou DN, Ge YH, Chen CC, Tan Q, Chen RJ, Yang YJ, et al. Associations of long-term exposure to ambient fine particulate matter and nitrogen dioxide with lung function: a cross-sectional study in China. Environ Int 2020;144:105977. http://dx.doi.org/10.1016/j.envint.2020.105977CrossRef