| Affiliation: | 1. Department of Internal Medicine and Institute of Gerontology, University of Michigan Medical School, , Ann Arbor, Michigan, USA;2. Department of Internal Medicine, Korea University College of Medicine, , Seoul, Korea;3. Federally Qualified Health Center, VNA Health Center, , Bensenville, Illinois, USA;4. School of Public Health, Yonsei University, , Seoul, Korea;5. Department of Internal Medicine, Saint Joseph Mercy Hospital, , Ann Arbor, Michigan, USA;6. Center of Clinical Research, Korea University College of Medicine, , Seoul, Korea;7. Center for Clinical Research, Yonsei University College of Medicine, , Seoul, Korea;8. Department of Epidemiology, School of Public Health, University of Washington, , Seattle, Washington, USA |
