1. Geriatric Research, Education, and Clinical Center and Salt Lake Informatics, Decision Enhancement and Surveillance Center, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, Department of Medical Informatics, University of Utah, Salt Lake City, Utah,
2. Geriatric Research, Education, and Clinical Center and Salt Lake Informatics, Decision Enhancement and Surveillance Center, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah
3. Office of Information, Veterans Health Administration, Department of Veterans Affairs, Salt Lake City, Utah
4. Geriatric Research, Education, and Clinical Center and Salt Lake Informatics, Decision Enhancement and Surveillance Center, George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah, Department of Internal Medicine, University of Utah, Salt Lake City, Utah