{{Cite journal| doi = 10.3390/microorganisms9081700| issn = 2076-2607 (Print) 2076-2607 (Electronic) 2076-2607 (Linking)| volume = 9| issue = 8| last1 = Audige| first1 = A.| last2 = Boni| first2 = J.| last3 = Schreiber| first3 = P. W.| last4 = Scheier| first4 = T.| last5 = Buonomano| first5 = R.| last6 = Rudiger| first6 = A.| last7 = Braun| first7 = D. L.| last8 = Eich| first8 = G.| last9 = Keller| first9 = D. I.| last10 = Hasse| first10 = B.| last11 = Berger| first11 = C.| last12 = Gunthard| first12 = H. F.| last13 = Manrique| first13 = A.| last14 = Trkola| first14 = A.| last15 = Huber| first15 = M.| title = Reduced Relative Sensitivity of the Elecsys SARS-CoV-2 Antigen Assay in Saliva Compared to Nasopharyngeal Swabs| journal = Microorganisms| date = 2021-08-28| pmid = 34442779}}