1. Division of General Internal Medicine and Geriatrics, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, United States
2. Regenstrief Institute, Inc., Indianapolis, Indiana, United States
3. Indiana University Health Methodist Hospital, Indianapolis, Indiana, United States
4. Center for Health Information and Communication, U.S. Department of Veterans Affairs, Veterans Health Administration, Health Services Research and Development Service CIN 13-416, Richard L. Roudebush VA Medical Center, Indianapolis, Indiana, United States
5. Department of Computer Information and Graphic Technology, Purdue School of Engineering and Technology, Indianapolis, Indiana, United States