Abstract
References
1.
Allison
P R
(1951 ) Surgery, Gynecology and Obstetrics
92 , 419
2.
Belsey
R
(1966 ) Proceedings of the Royal Society of Medicine
59 , 927
3.
Fatti
L
Crawshaw
G R
Marchand
P
(1952 ) South African Medical Journal
26 , 741
4.
Marchand
P
(1955 ) Thorax
10 , 171
5.
Petrov
A
(1959 ) Surgery
45 , 890