| Affiliation: | 1. Intramural Research Program, Laboratory of Epidemiology, and Population Sciences, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA;2. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA;3. Department of Endocrinology, Stanford University School of Medicine, CA, USA;4. Center for Musculoskeletal Health, University of California, Davis School of Medicine, Davis, CA, USA;5. Division of Epidemiology, Department of Family and Preventive Medicine, University of California, San Diego, La Jolla, CA, USA;6. Division of Geriatrics and Aging, Columbia University, New York, NY, USA;7. Research Institute, San Francisco Coordinating Center, California Pacific Medical Center, San Francisco, CA, USA;8. School of Medicine, Oregon Health and Science University, Portland, OR, USA |
