Abstract

References
1.
Kilpatrick
Z H
Farmar
J
Yesner
R
Spiro
H M
. (1968 ) Journal of the American Medical Association
205 , 64
2.
Marston
A
Pheils
M T
Thomas
M Lea
Morson
B C
. (1966 ) Gut
7 , 1
3.
Parks
T G
Johnston
G W
Kennedy
T L
Gough
A D
. (1972 ) Scandinavian Journal of Gastroenterology
7 , 241
