Abstract

References
1.
Butler
N R
Bonham
D G
. (1963 ) Perinatal Mortality . Edinburgh and London ; p. 142 .
2.
Drillien
C M
. (1967 ) Pediatrics
39 , 238 .
3.
Garrow
J S
Douglas
C P
. (1968 ) J. Obstet. Gynaec. Brit. Cwlth
75 , 1054 .
4.
Thomson
A M
Billewicz
W Z
Hytten
F E
. (1968 ) J. Obstet. Gynaec. Brit. Cwlth
75 , 903 .
