Abstract

References
1.
Ashton
J W
O'Connor
K J
Williams
G L
. (1963 ) Brit. med. J.
ii , 811 .
2.
Popper
H
Schaffner
F
. (1959 ) Ann. intern. Med.
51 , 1230 .
3.
Samrah
M E
. (1963 ) Brit. med. J.
i , 1736 .
4.
Duncan
W A M
Raventos
J
. (1959 ) Brit. J. Anæsth.
31 , 302 .
5.
Sargant
W
. (1963 ) Brit. med. J.
ii , 806 .
6.
Shaldon
S
Sherlock
S
. (1957 ) Brit. med. J.
ii , 734 .
7.
Vickers
M D A
Dinnick
O P
. (1964 ) Anæsthesia
19 , 24 .
