1 Department of Emergency Medicine, University of Alabama at Birmingham, Birmingham, AL; UAB Comprehensive Center for Healthy Aging, Birmingham, AL.
2 Department of Emergency Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC; Division of Geriatric Medicine, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC.
3 Division of Emergency Medicine, Washington University in St. Louis, St. Louis, MO.