1. Center for the Study of Healthcare Innovation, Implementation, and Policy, VA Greater Los Angeles Healthcare System, Los Angeles, CA, USA
2. University of California Los Angeles David Geffen School of Medicine, Los Angeles, CA, USA
3. UCLA Jane and Terry Semel Institute for Neuroscience and Human Behavior, Los Angeles, CA, USA
4. UCLA Fielding School of Public Health, Los Angeles, CA
5. VA National Center for PTSD, Palo Alto, CA, USA