1. From the Division of Geriatric Medicine, University of Alberta, Edmonton, Alberta, Canada
2. Department of Radiology, University of Alberta, Edmonton, Alberta, Canada
3. Departments of Cardiology and Medicine, Westchester Medical Center and New York Medical College, Valhalla, NY
4. Department of Medicine, Georgetown University, MedStar Washington Hospital Center, Washington, DC
5. Department of Medicine, New York Medical College, Valhalla, NY
6. Center for Data Science and Outcomes Research, Veterans Affairs Medical Center, George Washington University, Georgetown University, Washington, DC; and
7. Department of Medicine, UCSF School of Medicine, San Francisco, CA.