Funding for this research was provided by:
U.S. Department of Veterans Affairs (ORH-10708, CIN 13-412)
Agency for Healthcare Research and Quality (K08 HS025753)
National Heart, Lung, and Blood Institute (K23 HL127130, K23 HL125670)
U.S. Department of Defense (W81XWH-17-C-0252)
Received: 10 June 2019
Accepted: 4 February 2020
First Online: 12 February 2020
Ethics approval and consent to participate
: This project was determined not to be human subjects research by the University of Iowa Institutional Review Board IRB-03.
: No consent for publication is required.
: The authors declare that they have no competing interests.