1. Department of Physical Therapy, College of Health Sciences University of Kentucky Lexington KY USA
2. The Center for Muscle Biology University of Kentucky Lexington KY USA
3. Department of Physiology University of Kentucky Lexington KY USA
4. Department of Orthopaedics Eksjö, Region Jönköping County and Department of Biomedical and Clinical Sciences Linköping University Linköping Sweden
5. Division of Clinical Physiology Department of Laboratory Medicine Karolinska Institutet, and Unit of Clinical Physiology Karolinska University Hospital Stockholm Sweden
6. Department of Physiology and Pharmacology Karolinska Institutet Stockholm Sweden
7. Department of Nutrition and Health Sciences University of Nebraska Lincoln NE USA
8. Department of Biology Indiana University Bloomington IN USA
9. Division of Pediatric Neurology Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden