- Correspondence to Dr Andreas Ramming, University Hospital Erlangen, Department of Internal Medicine 3, Rheumatology & Immunology, Friedrich-Alexander-Universitat Erlangen-Nurnberg Medizinische Fakultat, Erlangen, Bayern, Germany;
- Received December 23, 2021
- Accepted April 6, 2022
- First published April 22, 2022.
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