Abstract

References
1.
Dunhill
T. P.
(1909 ) Brit. med. j. , i , 1222 .
2.
Dunhill
T. P.
(1929–30 ) Brit. J. Surg. , 17 , 424 .
3.
Hudson
R. V.
(1958 ) Brit. J. Surg.
45 , 463 .
4.
Hudson
R. V.
(1959 ) Irish J. med. Sci. , No. 400, p. 149 .
