1. Department of Physiology, University of Kentucky , Lexington, KY , USA
2. Center for Muscle Biology, University of Kentucky , Lexington, KY , USA
3. School of Kinesiology, Auburn University , Auburn, AL , USA
4. Department Health, Human Performance, & Recreation, University of Arkansas , Fayetteville, AR , USA
5. Department of Neurology and Neurological Sciences, Stanford University School of Medicine , Stanford, CA , USA
6. Dana-Farber Cancer Institute, Harvard Medical School , Boston, MA , USA
7. Department of Biomedicine, Aarhus University , Aarhus C , Denmark
8. Broad Stem Cell Research Center, University of California Los Angeles , Los Angeles, CA , USA
9. Department of Physical Therapy, University of Kentucky , Lexington, KY , USA