PT - JOURNAL ARTICLE AU - Hill, Jonathan C. AU - Hay, Elaine M. TI - Invited Commentary AID - 10.demo/ptj.20100109.ic DP - 2011 May 01 TA - Demo Journal of Physical Therapy PG - 733--734 VI - 91 IP - 5 4099 - http://demo.highwire.org/content/91/5/733.short 4100 - http://demo.highwire.org/content/91/5/733.full