Konik, M.;                     Lindemann, M.;                     Zettler, M.;                     Meller, L.;                     Dolff, S.;                     Rebmann, V.;                     Horn, P.A.;                     Dittmer, U.;                     Krawczyk, A.;                     Schipper, L.;     
    et al.    Long-Term SARS-CoV-2 Specific Immunity Is Affected by the Severity of Initial COVID-19 and Patient Age. J. Clin. Med. 2021, 10, 4606.
    https://doi.org/10.3390/jcm10194606
    AMA Style
    
                                Konik M,                                 Lindemann M,                                 Zettler M,                                 Meller L,                                 Dolff S,                                 Rebmann V,                                 Horn PA,                                 Dittmer U,                                 Krawczyk A,                                 Schipper L,         
        et al.        Long-Term SARS-CoV-2 Specific Immunity Is Affected by the Severity of Initial COVID-19 and Patient Age. Journal of Clinical Medicine. 2021; 10(19):4606.
        https://doi.org/10.3390/jcm10194606
    
    Chicago/Turabian Style
    
                                Konik, Margarethe,                                 Monika Lindemann,                                 Markus Zettler,                                 Lara Meller,                                 Sebastian Dolff,                                 Vera Rebmann,                                 Peter A. Horn,                                 Ulf Dittmer,                                 Adalbert Krawczyk,                                 Leonie Schipper,         
         and et al.        2021. "Long-Term SARS-CoV-2 Specific Immunity Is Affected by the Severity of Initial COVID-19 and Patient Age" Journal of Clinical Medicine 10, no. 19: 4606.
        https://doi.org/10.3390/jcm10194606
    
    APA Style
    
                                Konik, M.,                                 Lindemann, M.,                                 Zettler, M.,                                 Meller, L.,                                 Dolff, S.,                                 Rebmann, V.,                                 Horn, P. A.,                                 Dittmer, U.,                                 Krawczyk, A.,                                 Schipper, L.,                                 Trilling, M.,                                 Anastasiou, O. E.,                                 Schwarzkopf, S.,                                 Thümmler, L.,                                 Taube, C.,                                 Schöbel, C.,                                 Brenner, T.,                                 Skoda, E.-M.,                                 Wilde, B.,         
                                            ... Rohn, H.        
        (2021). Long-Term SARS-CoV-2 Specific Immunity Is Affected by the Severity of Initial COVID-19 and Patient Age. Journal of Clinical Medicine, 10(19), 4606.
        https://doi.org/10.3390/jcm10194606