Abstract
References
1.
Crile
G
Turnbull
R B
(1972 ) Surgery, Gynecology and Obstetrics
135 , 371
2.
Pemberton
T M P
(1972 ) Proceedings of the Royal Society of Medicine
65 , 663
3.
Wood
W O
Wilkie
D P D
(1933 ) Edinburgh Medical Journal
11 , 321