Abstract
References
1.
Helstrom
J
(1949 ) Brit. J. Urol . 21 , 9 .
2.
Lapides
J
(1948 ) J. Urol . 59 , 501 .
3.
Lloyd
J W
Smith
A C
O'Connor
B T
(1965 ) Brit. med. J . i , 1518 .
4.
Simpson
B R J
(1961 ) Brit. J. Anœsth . 33 , 628 .
5.
Simpson
B R J
Salt
R H
(1961 ) Brit. J. Anœsth . 33 , 664 .