Received: 3 July 2020
Accepted: 14 January 2021
First Online: 28 January 2021
Ethics approval and consent to participate
: The project was registered at ClinicalTrials.gov (identifier NCT03222999) and ethically reviewed and approved by the institutional review board (IRB) of the 62 participating hospitals. The study was waived for informed consent by the IRB.
: Not applicable.
: The authors declare no competing interests.