1. Center for Access & Delivery Research and Evaluation (CADRE), Iowa City VA Health Care System , Iowa City, IA 52246, USA
2. VA Office of Rural Health (ORH), Veterans Rural Health Resource Center-Iowa City (VRHRC-IC), Iowa City VA Health Care System , Iowa City, IA 52246, USA
3. Department of Internal Medicine, The University of Iowa Carver College of Medicine , Iowa City, IA 52242, USA
4. Department of Epidemiology, University of Iowa College of Public Health , Iowa City, IA 52242, USA
5. Department of Neurosurgery and Surgery, University of Iowa Carver College of Medicine , Iowa City, IA 52242-1089, USA
6. VA Behavioral Health Quality Enhancement Research Initiative (QUERI), Central Arkansas Veterans Healthcare System , Little Rock, AR 72205-5446, USA
7. Department of Psychiatry, College of Medicine, University of Arkansas for Medical Sciences , Little Rock, AR 72205, USA
8. Department of Psychiatry, University of Iowa Carver College of Medicine , Iowa City, IA 52242, USA