Abstract

Get full access to this article
View all access options for this article.
References
1.
Crichton
E. D.
(1962 ). Paper read at Congress of the South African Society of Obstetricians and Gynaecologists.
2.
Friedman
E. A.
(1967 ). In Labour, Clinical Evaluation and Management . New York : Appleton-Century-Crofts .
3.
Philpott
R. H.
Castle
W. M.
(1972 ). J. Obstet. Gynaec. Brit. Cwlth , 79 , 592 .
4.
Philpott
R. H.
(1972 ). Brit. med. J. , 4 , 163 .
5.
Studd
J.
(1973 ). Brit. med. J. , 4 , 451 .
