N. E. Zorgi, L. R. Meireles, D. B. L. Oliveira, D. B. Araujo, E. L. Durigon, and H. F. de Andrade Junior, “Isolated specific IgA against respiratory viruses, Influenza or SARS-CoV-2, present in the saliva of a fraction of healthy and asymptomatic volunteers”, Clinics, vol. 77, p. 100105, Sep. 2022, doi: 10.1016/j.clinsp.2022.100105.