1 Marymount University, Center for Optimal Aging, Department of Physical Therapy, Arlington Virginia USA. Electronic address: jries@marymount.edu.
2 University of Nicosia, School of Sciences & Engineering, Department of Life & Health Sciences, Nicosia, Cyprus; King's College London, Department of Nutritional Sciences, London UK.
3 University of Kansas Medical Center, Department of Physical Therapy, Rehabilitation Science, and Athletic Training, Kansas City Kansas USA.
4 University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada; McMaster University, School of Rehabilitation Sciences, Hamilton Ontario Canada.
5 University of Texas Southwestern Medical Center, Department of Physical Medicine & Rehabilitation, Dallas Texas USA.
6 Thomas Jefferson University, Applied Health Economics & Outcomes Research, Health Policy, Philadelphia, Pennsylvania USA; University of Southern California, NIA Funded Network on Life-Course and Health Dynamics & Disparities, Los Angeles California USA.
7 Marymount University, Center for Optimal Aging, Arlington, Virginia USA.