[1] Univ Tennessee, Dept Pediat, Hlth Sci Ctr, 50 North Dunlap St,Room 447R, Memphis, TN 38103 USA
[2] Univ Tennessee, Dept Phys Therapy, Coll Hlth Profess, Hlth Sci Ctr, 930 Madison Avenus,Suite 636, Memphis, TN 38163 USA
[3] Univ Tennessee, Hlth Sci Ctr, Dept Orthopaed Surg & Biomed Engn, Joint Grad Program Biomed Engn,Campbell Clin, 956 Court Ave, Memphis, TN 38163 USA
[4] Campbell Clin Orthopaed, Dept Phys Therapy, 1400 South Germantown Rd, Germantown, TN 38138 USA
[5] Univ Mississippi, Sch Appl Sci, Dept Hlth Exercise Sci & Recreat Management, George St House, University, MS 38677 USA
[6] Univ Memphis, Sch Publ Hlth, Div Epidemiol Biostat & Environm Hlth, 228 Robison Hall, Memphis, TN 38152 USA