1 IDEAS 2.0 Center, George E. Whalen VA Medical Center, Department of Biomedical Informatics, University of Utah, Salt Lake City, UT, USA. Electronic address: Charlene.Weir@utah.edu.
2 IDEAS 2.0 Center, George E. Whalen VA Medical Center, Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA. Electronic address: Michael.Rubin@hsc.utah.edu.
3 IDEAS 2.0 Center, George E. Whalen VA Medical Center, Division of Geriatrics, University of Utah School of Medicine, Salt Lake City, UT, USA. Electronic address: Jonathan.Nebeker@va.gov.
4 IDEAS 2.0 Center, George E. Whalen VA Medical Center, Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, UT, USA. Electronic address: Matthew.Samore@hsc.utah.edu.