Abstract
References
1.
Catterall
R C F
, (1972 ) British Journal of Hospital Medicine
7 , 224
2.
Oakley
W
Catterall
R C F
Martin
M M
, (1956 ) British Medical Journal
ii , 953 –957
3.
Silbert
S
, (1944 ) American Journal of Digestive Diseases
11 , 394