1. College of Dental Medicine, Roseman University of Health Sciences, South Jordan, UT 84095, USA
2. Department of Orthopaedic Surgery Operations, University of Utah, Salt Lake City, UT 84112, USA
3. George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, UT 84148, USA
4. Institute on Aging, Portland State University, Portland, OR 97201, USA