Abstract

References
1.
Bunker
J P
Bendixen
H H
Murphy
A J
(1962 ) New Engl. J. Med.
266 , 372
2.
Burton
G W
Holderness
M C
(1964 ) Anœsthesia
19 , 408
3.
Firt
P
Hejhal
L
(1957 ) Lancet
ii , 1132
4.
Gauer
O H
Sieker
H O
(1956 ) Circulat. Res.
4 , 74
5.
Seldinger
S I
(1953 ) Acta radiol., Stockh . 39 , 368
