Abstract
References
1.
Beller
A J
Sahar
A
Praiss
I
. (1973 ) Journal of Neurology, Neurosurgery and Psychiatry , 36 , 757 .
2.
Black
P
Graybill
J R
Charache
P
. (1973 ) Journal of Neurosurgery , 38 , 705 .
3.
Garfield
J
. (1969 ) British Medical Journal , ii , 7 –11 .
4.
Heineman
H S
Braude
AI
Osterholm
J L
. (1971 ) Journal of American Medical Association , 218 , 1542 .
5.
Morgan
H
Wood
M W
Murphey
F
. (1973 ) Journal of Neurosurgery , 38 , 698 .
6.
Samson
D S
Clark
K
. (1973 ) American Journal of Medicine , 54 , 201 .