Abstract
Get full access to this article
View all access options for this article.
References
1.
Doll
R.
(1951 ). Occupational Factors in the Aetiology of Gastric and Duodenal Ulcers . Spec. Rep. Ser. med. Res. Coun. (Lond.) , No. 276.
2.
Palmer
E. D.
(1970 ). Surg. Gynec. Obstet. , 130 , 709 .
3.
Susser
M.
Stein
Z.
(1962 ). Lancet , 1 , 115 .
4.
Tovey
F. I.
(1974 ). Tropical Doctor , 4 , 17 –21 .