Received: 4 January 2021
Accepted: 22 March 2021
First Online: 5 April 2021
: The study protocol was approved by institutional review boards at Huntington Hospital (Pasadena, CA, USA), Los Angeles County + University of Southern California (USC) Medical Center (Los Angeles, CA, USA), and Keck Hospital of USC (Los Angeles, CA, USA). Informed consent was waived by all three participating sites, as this was an observational study. All methods were carried out in accordance with guidelines set by each institution.
: Not applicable.
: The authors have no conflict of interest to disclose.