Ma, L.;                     Huo, X.;                     Yang, A.;                     Yu, S.;                     Ke, H.;                     Zhang, M.;                     Bai, Y.    
        Metal Exposure, Smoking, and the Risk of COPD: A Nested Case–Control Study in a Chinese Occupational Population. Int. J. Environ. Res. Public Health 2022, 19, 10896.
    https://doi.org/10.3390/ijerph191710896
    AMA Style
    
                                Ma L,                                 Huo X,                                 Yang A,                                 Yu S,                                 Ke H,                                 Zhang M,                                 Bai Y.        
                Metal Exposure, Smoking, and the Risk of COPD: A Nested Case–Control Study in a Chinese Occupational Population. International Journal of Environmental Research and Public Health. 2022; 19(17):10896.
        https://doi.org/10.3390/ijerph191710896
    
    Chicago/Turabian Style
    
                                Ma, Li,                                 Xinxin Huo,                                 Aimin Yang,                                 Shuxia Yu,                                 Hongxia Ke,                                 Mingxia Zhang,                                 and Yana Bai.        
                2022. "Metal Exposure, Smoking, and the Risk of COPD: A Nested Case–Control Study in a Chinese Occupational Population" International Journal of Environmental Research and Public Health 19, no. 17: 10896.
        https://doi.org/10.3390/ijerph191710896
    
    APA Style
    
                                Ma, L.,                                 Huo, X.,                                 Yang, A.,                                 Yu, S.,                                 Ke, H.,                                 Zhang, M.,                                 & Bai, Y.        
        
        (2022). Metal Exposure, Smoking, and the Risk of COPD: A Nested Case–Control Study in a Chinese Occupational Population. International Journal of Environmental Research and Public Health, 19(17), 10896.
        https://doi.org/10.3390/ijerph191710896