RT Journal Article SR Electronic T1 Invited Commentary JF Physical Therapy JO Phys Ther FD American Physical Therapy Association SP 825 OP 827 DO 10.2522/ptj.20080160.ic VO 89 IS 8 A1 Escorpizo, Reuben A1 Cieza, Alarcos A1 Stucki, Gerold YR 2009 UL http://jcore-reference.highwire.org/content/89/8/825.abstract AB