Abstract

References
1.
Green-Armytage
V. B.
Dutta
P. C.
(1936 ), “Textbook of Tropical Midwifery” . London.
2.
Maxwell
Preston
J.
(1934 ),. Proc. Roy. Soc. Med. , 28 , 265 (Sect. Obst. and Gynæc., 1).
3.
Maxwell
J. Preston
Pi
H. T.
Lin
H. A. C.
Kuo
C. C.
(1939 ), Proc. Roy. Soc. Med. , 32 , 287 (Sect. Obst. and Gynaec, 31).
4.
Mellanby
E.
(1933 ), Lancet (ii), 1131 .
