Abstract

References
1.
Byrnes
D P
Crockard
H A
Gordon
D S
Gleadhill
C A
. (1974 ) British Journal of Surgery (in press)
2.
Crockard
H A
Coppell
D L
Morrow
W F K
. (1973 ) British Medical Journal
iv , 767
3.
Jennett
W B
Barker
J
Fitch
W
McDowall
D G
. (1969 ) Lancet
i , 61
4.
Raimondi
A J
Samuelson
G H
. (1970 ) Journal of Neurosurgery
32 , 647
