[1] East Tennessee State Univ, Dept Rehabil Sci, Johnson City, TN USA
[2] Radford Univ Caril, Waldron Coll Hlth Sci, Dept Phys Therapy, Roanoke, VA USA
[3] Emory & Henry Coll, Sch Hlth Sci, Phys Therapy Program, Marion, VA USA
[4] Tufts Univ, Sch Med, Res & Fac Dev, Boston, MA USA
[5] Tufts Univ, Sch Med, Phys Therapy Program, Boston, MA USA
[6] East Tennessee State Univ, Phys Therapy Program, Johnson City, TN USA
[7] East Tennessee State Univ, Dept Rehabil Sci, Johnson City, TN 37601 USA