1. Muscle Biology Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, Michigan
2. Hospital for Special Surgery and Department of Physiology and Biophysics, Weill Cornell Medical College, New York, New York
3. Applied Biostatistics Laboratory, University of Michigan, Ann Arbor, Michigan
4. Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
5. Institute of Gerontology, University of Michigan, Ann Arbor, Michigan