Abstract
References
1.
Bradshaw
P
. (1957 ) Quart. J. Med.
50 , 177 .
2.
Cloward
R B
. (1958 ) J. Neurosurg.
15 , 602 .
3.
Harris
P
. (1960 ) J. Neurol. Psychiat.
23 , 393 .
4.
Harris
P
. (1963 ) Int. J. Paraplegia
1 , 72 .
5.
Smith
G
Robinson
R A
. (1955 ) Bull. Johns Hopk. Hosp.
96 , 223 .