1. KM Hermann, PT, PhD, is Director, The Therapy Center, College Station Medical Center, 1605 Rock Praire Rd, Ste 5, College Station, TX 77845 (USA).
2. CS Reese, PhD, is Technical Staff Member, Statistical Sciences, Los Alamos National Laboratory, Los Alamos, NM. Dr Reese was a doctoral candidate in the Department of Statistics, Texas A&M University, College Station, Tex, at the time of the study