Royuela, A.;                     Kovacs, F.M.;                     Seco-Calvo, J.;                     Fernández-Félix, B.M.;                     Abraira, V.;                     Zamora, J.    
        Physician-Related Variability in the Outcomes of an Invasive Treatment for Neck and Back Pain: A Multi-Level Analysis of Data Gathered in Routine Clinical Practice. Int. J. Environ. Res. Public Health 2021, 18, 3855.
    https://doi.org/10.3390/ijerph18083855
    AMA Style
    
                                Royuela A,                                 Kovacs FM,                                 Seco-Calvo J,                                 Fernández-Félix BM,                                 Abraira V,                                 Zamora J.        
                Physician-Related Variability in the Outcomes of an Invasive Treatment for Neck and Back Pain: A Multi-Level Analysis of Data Gathered in Routine Clinical Practice. International Journal of Environmental Research and Public Health. 2021; 18(8):3855.
        https://doi.org/10.3390/ijerph18083855
    
    Chicago/Turabian Style
    
                                Royuela, Ana,                                 Francisco M. Kovacs,                                 JesĂşs Seco-Calvo,                                 Borja M. Fernández-FĂ©lix,                                 VĂctor Abraira,                                 and Javier Zamora.        
                2021. "Physician-Related Variability in the Outcomes of an Invasive Treatment for Neck and Back Pain: A Multi-Level Analysis of Data Gathered in Routine Clinical Practice" International Journal of Environmental Research and Public Health 18, no. 8: 3855.
        https://doi.org/10.3390/ijerph18083855
    
    APA Style
    
                                Royuela, A.,                                 Kovacs, F. M.,                                 Seco-Calvo, J.,                                 Fernández-Félix, B. M.,                                 Abraira, V.,                                 & Zamora, J.        
        
        (2021). Physician-Related Variability in the Outcomes of an Invasive Treatment for Neck and Back Pain: A Multi-Level Analysis of Data Gathered in Routine Clinical Practice. International Journal of Environmental Research and Public Health, 18(8), 3855.
        https://doi.org/10.3390/ijerph18083855