Received: 4 July 2020
Accepted: 16 October 2020
First Online: 27 October 2020
Ethics approval and consent to participate
: Approval was obtained from the University of California Institutional Review Board and Ethical Standards Committee (HS#2018–4332) for this study. There are no any patient identifier information, figures or videos of a recognizable patient. Informed patient consent was not required for this retrospective chart review.
: Not applicable.
: The authors declare that they have no competing interests.