1. Duke University School of Medicine, Durham, NC, USA
2. Yale University, New Haven, CT, USA
3. Department of Geriatrics and Gerontology, National Taiwan University Hospital, Taipei, Taiwan
4. Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
5. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
6. Department of Public Health, National Taiwan University, Taipei, Taiwan
7. Research Center for Genes, Environment and Human Health, College of Public Health, National Taiwan University, Taipei, Taiwan