Received: 19 August 2020
Accepted: 15 December 2020
First Online: 12 January 2021
Ethics approval and consent to participate
: The Cleveland Clinic Abu Dhabi Research Ethics Committee granted permission for this retrospective review of an authorized registry of all patients admitted to Cleveland Clinic Abu Dhabi with COVID-19 (Research Ethics Committee study number A-2020-032). No additional administrative permissions were needed to access the raw data.
: Not applicable.
: The authors declare that they have no competing interests.