1. Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.
2. Department of Internal Medicine, Pyeongchang Health Center & County Hospital, Pyeongchang, Korea.
3. Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Department of Urology, Pyeongchang Health Center & County Hospital, Pyeongchang, Korea.
5. Community Health Post, Pyeongchang Health Center & County Hospital, Pyeongchang, Korea.
6. Manager of Public Health, Pyeongchang Health Center & County Hospital, Pyeongchang, Korea.
7. Division of Gerontology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.