[1] HARVARD UNIV,SCH MED,DEPT NEUROL,BOSTON,MA 02115
[2] HARVARD UNIV,SCH MED,DEPT ORTHOPED SURG,BOSTON,MA 02115
[3] NIH,DEPT REHABIL MED,BIOMECH LAB,BETHESDA,MD 20205
[4] NINCDS,BETHESDA,MD 20205
[5] CHILDRENS HOSP MED CTR,DEPT ORTHOPED SURG,BOSTON,MA 02115
[6] HARVARD UNIV,MIT,CTR REHABIL ENGN,GAIT ANAL LAB,CAMBRIDGE,MA 02138