Abstract

References
1.
Belber
J P
(1971 ) Gastroenterology
61 , 55
2.
Bernstein
L M
Baker
L A
(1958 ) Gastroenterology
34 , 760
3.
Brown
P
Salmon
P R
Thien-Htut
Read
A E
(1972 ) British Medical Journal
iii , 661 –664
4.
Childs
P
(1972 ) British Journal of Surgery
59 , 9
5.
Classen
M
(1973 ) Clinics in Gastroenterology
2 , 320
6.
Cotton
P B
Rosenberg
M T
Waldram
R P L
Axon
A T R
(1973 ) British Medical Journal
ii , 505 –5C9
7.
Earlam
R J
(1972 ) British Medical Journal
ii , 683 –685
8.
Hunt
T
(1972 ) British Medical Journal
iv , 689 –694
9.
Meade
T W
Arie
T H
Bravis
M
Bond
D J
Morris
J N
(1968 ) British Medical Journal
iii , 701
10.
Polland
W S
Bloomfield
A L
(1931 ) Journal of Clinical Investigation
10 , 435
