{{Cite journal| doi = 10.1007/s10654-020-00678-5| issn = 1573-7284 (Electronic) 0393-2990 (Print) 0393-2990 (Linking)| volume = 35| issue = 8| pages = 763–773| last1 = Taneri| first1 = P. E.| last2 = Gomez-Ochoa| first2 = S. A.| last3 = Llanaj| first3 = E.| last4 = Raguindin| first4 = P. F.| last5 = Rojas| first5 = L. Z.| last6 = Roa-Diaz| first6 = Z. M.| last7 = Salvador| first7 = D., Jr.| last8 = Groothof| first8 = D.| last9 = Minder| first9 = B.| last10 = Kopp-Heim| first10 = D.| last11 = Hautz| first11 = W. E.| last12 = Eisenga| first12 = M. F.| last13 = Franco| first13 = O. H.| last14 = Glisic| first14 = M.| last15 = Muka| first15 = T.| title = Anemia and iron metabolism in COVID-19: a systematic review and meta-analysis| journal = Eur J Epidemiol| date = 2020-08-21| pmid = 32816244}}