1. Department of Human Nutrition, Foods and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
2. University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
3. Carolinas Medical Center, Charlotte, North Carolina, USA
4. Center for Orthopaedic Research and Education, St. Luke's Episcopal Hospital, Houston, Texas, USA
5. Health Research Group, LLC, Rockbridge Baths, Virginia, USA
6. Sanger Clinic, Charlotte, North Carolina, USA