1. Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
2. Center for Research and Innovation in Systems Safety, Vanderbilt University Medical Center, Nashville, Tennessee
3. Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee
4. ESO Solutions, Inc. Austin, Texas
5. Geriatric Research, Education, and Clinical Center (GRECC), Tennessee Valley Healthcare System, Nashville, Tennessee