Funding for this research was provided by:
U.S. Department of Veterans Affairs (CDA 13-264)
Department of Veterans Affairs HSR&D (09-088)
First Online: 14 June 2019
Compliance with Ethical Standards
: Charles P. Brandt, Frances Deavers, Natalie E. Hundt, Terri L. Fletcher, and Jeffrey A. Cully declare that they have no conflict of interest.
: The study was approved by the Veterans Health Administration (VA) Central Institutional Review Board as well as the Houston and Oklahoma City VA facility Research and Development Offices and was reviewed annually by VA’s national Data Safety Monitoring Board.