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Archives of Physical Medicine and Rehabilitation > 2012 > 93 > 2 > 279-286
Journal of Clinical Epidemiology > 2001 > 54 > 10 > 1019-1024
Journal of Clinical Epidemiology > 1997 > 50 > 7 > 765-772
Archives of Physical Medicine and Rehabilitation > 2012 > 93 > 2 > 279-286
Journal of Clinical Epidemiology > 2001 > 54 > 10 > 1019-1024
Journal of Clinical Epidemiology > 1997 > 50 > 7 > 765-772