Louw, Adriaan PT, PhD1; Schmidt, Stephen PT2; Zimney, Kory PT, DPT3; Puentedura, Emilio J. PT, DPT, PhD4
1International Spine and Pain Institute, Story City, Iowa.
2Kaiser Foundation Rehabilitation Center, Vallejo, California.
3Department of Physical Therapy, School of Health Sciences, University of South Dakota, Vermillion.
4Doctor of Physical Therapy Program, Baylor University Graduate School, Waco, Texas.
The authors affirm that they have no financial affiliation (including research funding) or involvement with any commercial organization that has a direct financial interest in any matter included in this article.