Received: 30 November 2020
Accepted: 13 January 2021
First Online: 25 January 2021
Ethics approval and consent to participate
: The local ethics committee (LEC No. 16-2016-20) approved the study. The ethics committee of the hospitals (Sechenov First Moscow State Medical University) waived the written informed consent from patients with COVID-19, and all the procedures being performed were part of the routine care.
: Not applicable.
: The authors declare that they have no competing interests.