Abstract
Get full access to this article
View all access options for this article.
References
1.
Carter
R. F.
Greene
C. H.
Twiss
J. R.
Hotz
R.
: Arch. Surg.
1939 : 39 : 691 .
2.
Feldman
M.
: Clinical Roentgenology of the Digestive Tract . London
1948 .
3.
Åkerlund
Å.
: Acta Radiol.
1938 : 19 : 23 .