Funding for this research was provided by:
U.S. Department of Veterans Affairs (IIR 16-216, RCS14-232)
Received: 13 December 2021
Accepted: 17 April 2022
First Online: 13 September 2022
: The study was approved by the Stanford University Institutional Review Board and the VA Palo Alto Research & Development Committee with a waiver of informed consent.
: Not applicable.
: The authors declare that they have no competing interests.