Van der Wees Philip J, Moore Ann P, Powers Christopher M, Stewart Aimee, Nijhuis-van der Sanden Maria W G, de Bie Rob A
Radboud University Nijmegen Medical Centre, Scientific Institute for Quality of Healthcare, Nijmegen, the Netherlands.
Phys Ther. 2011 Oct;91(10):1551-63. doi: 10.2522/ptj.20100305. Epub 2011 Jul 28.