1. Department of Public Health and Community Medicine, Tufts University School of Medicine, 136 Harrison Ave, Boston, MA 02111, USA
2. Department of Physical Therapy, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
3. Department of Physical Therapy, UT Southwestern School of Health Professions, Dallas, Texas, USA
4. School of Physical Therapy, Texas Woman’s University, Houston, Texas, USA