International standards for neurological classification of spinal cord injury: Cases with classification challenges

S. C. Kirshblum, F. Biering-Sørensen, R. Betz, S. Burns, W. Donovan, D. E. Graves, M. Johansen, L. Jones, M. J. Mulcahey, G. M. Rodriguez, M. Schmidt-Read, J. D. Steeves, K. Tansey, W. Waring