1. Vanderbilt University Medical Center, Department of Emergency Medicine, Nashville, Tennessee Tenessee Valley Healthcare System, Department of Emergency Medicine, Nashville, Tennessee
2. Vanderbilt University Medical Center, Department of Emergency Medicine, Nashville, Tennessee
3. Evaluation (CADRE) Iowa City VA Healthcare System, Center for Access & Delivery Research and Evaluation, Iowa City, Iowa University of Iowa Carver College of Medicine, Department of Emergency Medicine, Iowa City, Iowa University of Iowa Carver College of Medicine, Department of Anesthesia, Iowa City, Iowa
4. Evaluation (CADRE) Iowa City VA Healthcare System, Center for Access & Delivery Research and Evaluation, Iowa City, Iowa University of Iowa Carver College of Medicine, Department of Internal Medicine, Iowa City, Iowa