Abstract
References
1.
James
T G I
(1956 ) Ann. R. Coll. Surg. Engl.
18 , 228
2.
McKenzie
A
(1956 ) Brit. med. J.
ii , 204
3.
Nielson
O S
Roelsgaard
M
(1956 ) Acta radiol., Stockh.
45 , 273
4.
Rienets
J M
(1930 ) Proc. Mayo Clin.
5 , 364
5.
Shanks
S C
(1950 ) Proc. R. Soc. Med.
43 , 117
6.
Smith
F H
Jordan
S M
(1948 ) Gastroenterology
11 , 575
7.
Stewart
M J
(1929 ) Brit. med. J.
ii , 567