1 Department of Transplantation Medicine, Oslo University Hospital-Rikshospitalet, Oslo, Norway.
2 Department of Immunology, University of Oslo, Oslo, Norway.
3 Department of Nephrology, Akershus University Hospital, Lørenskog, Norway.
4 Department of Medicine, Haukeland University Hospital, Bergen, Norway.
5 Department of Nephrology, Oslo University Hospital, Oslo, Norway.
6 Department of Internal Medicine, Stavanger University Hospital, Stavanger, Norway.
7 Department of Clinical Medicine, University of Bergen, Bergen, Norway.
8 Department of Internal Medicine, Innlandet Hospital Trust, Lillehammer, Norway.
9 Nordland Hospital Trust, Department of nephrology, Division of Internal Medicine, Bodø, Norway.
10 Department of Nephrology, Østfold Hospital, Norway.
11 Norwegian Renal Registry, Oslo University Hospital-Rikshospitalet, Oslo, Norway.
12 Department of Pharmacy, University of Oslo, Oslo, Norway.
Received 24 May 2021.
Accepted 27 May 2021.
The authors declare no funding or conflicts of interest.
K.M. and A.Å. deigned the study, collected data, and wrote the article. T.T., E.B.V., and F.L.-J. performed the SARS-CoV-2 IgG analysis. A.Å. performed the statistical analysis. K.M., K.P., H.-P.M., A.-E.S., L.G.G., K.M.S., C.M., and J.S. included the patients. All authors revised and accepted the final version of the article.
Correspondence: Karsten Midtvedt, MD, PhD, Oslo Universitetssykehus HF, Rikshospitalet, Postboks 4950, Nydalen, Oslo 0424, Norway. ([email protected]).
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