1 Department of Medicine, School of Clinical Sciences, Monash University, Melbourne, Australia.
2 Department of Clinical Sciences, Lund University, Malmö, Sweden.
3 Department of Medicine, University of California, San Francisco, California, USA.
4 Department of Clinical Epidemiology, Cabrini Institute, and Department of Epidemiology and Preventive Medicine, School of Public Health and Preventative Medicine, Monash, Monash University, Melbourne, Australia.
5 Department of Human Metabolism, University of Sheffield, Sheffield, United Kingdom.
6 Veterans Affairs Medical Center, Geriatric Research Education and Clinical Center, and Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA.
7 Department of Kinesiology, University of Waterloo, Waterloo, Canada.
8 Department of Rheumatology and Schlegel Research Institute for Aging, Hospital Clinic, University of Barcelona, Barcelona, Spain.
9 Department of Medicine, University of California, San Diego, California, USA.
10 Mayo Clinic, Rochester, Minnesota, USA.
11 Department of Physical Therapy and Rehabilitation Science, University of California, San Francisco, California, USA.
12 Division of Endocrinology, Mayo Clinic, Rochester, Minnesota, USA.
13 Newport News, Virginia, USA.
14 Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.