Abstract

References
1.
Ainsworth-Davis
J. C.
(1950 ) Essentials of Urology . Oxford.
2.
Riches
E. W.
Cullen
T. H.
(1951 ) Brit. J. Urol. , 23 , 209 .
3.
Williams
E.
(1947 ) Proc. R. Soc. Med. , 40 , 361 .
4.
Winterton
W. R.
(1937 ) J. Obstet. Gynœc. Brit. Emp. , 44 , 517 .
