DeVivo MJ.
Dep. of PMR, National SCI Statistical Center, University of Alabama at Birmingham, Spain Rehabilitation Center, Birmingham, AL, USA
Spinal Cord, 2007;45;713-21

Bula CJ, Martin E, Rochat S, Piot-Ziegler C
Department of Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.

Ogawa H et al.
Dpt of Orthopaedic Surgery, Gifu University, Japan
Arch Phys Med Rehabil 2008;89:329-32

Haley S et al.
Health and Disability Research Institute, Haley, Boston University Medical Center, Boston, USA
Arch Phys Med Rehabil 2008;89:275-83.

Klein M et al.
Moss Rehabilitation Research Institute, Philadelphia, USA
Arch Phys Med Rehabil 2008;89:297-303

Ziegler-Graham K et al.
Dpt of Mathematics, Statistics and Computer Science, Northfield; Dpt of Health Policy and Management, Baltimore
Arch Phys Med Rehabil 2008;89:422-9

Max Neill HL et al.
Division of Physiatry, University of Toronto, Canada
Am J Phys Med Rehabil 2008;87:189-96.

Bussmann JB et al.
Dpt of Rehabil Med, Erasmus University Medical Cnetre Rotterdam, The Netherlands
Arch Phys Med Rehabil 2008;89:430-4

Pang MYC, Eng JJ.
Dpt of Rehab. Sciences, Hong Kong Polytechnic University; School of Rehab Sciences, University of British Columbia; Rehab Research Lab, Vancouver, Canada.
J Rehabil Med 2008; 40: 284-90.

Koren-Bitensky N, Desrosiers J, Rochette A
J Rehabil Med 2008; 40: 291-7.