Funding for this research was provided by:
Westfälische Wilhelms-Universität Münster
Received: 12 May 2021
Accepted: 20 September 2021
First Online: 14 October 2021
: COVIMOD was approved by the ethics committee of the Medical Board Westfalen-Lippe and the University of Münster, reference number 2020-473-f-s. Informed consent was obtained from all COVIMOD participants. The POLYMOD data collection was approved by national institutional review boards [CitationRef removed]. As only anonymised POLYMOD data were used in this study, an institutional review was not required for reanalysis.
: Not applicable.
: The authors declare that they have no competing interests.