1Department of Rheumatology and Clinical Immunology, University Medical Centre Utrecht, Utrecht
2Department of Internal Medicine and Rheumatology, Martini Hospital, Groningen
3Department of Haematology, ErasmusMC, University Medical Centre Rotterdam, Rotterdam
4Department of Rheumatology and Clinical Immunology, University Medical Centre Groningen, Groningen, The Netherlands Correspondence to: Maarten Limper, Department of Rheumatology and Clinical Immunology, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands. E-mail: m.limper-2@umcutrecht.nl
© The Author(s) 2021. Published by Oxford University Press on behalf of the British Society for Rheumatology.
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