Abstract

References
1.
Cockayne
E. A.
(1936 ) Arch. Dis. Childh. , 11 , 1 .
2.
Cockayne
E. A.
(1946 ) Arch. Dis. Childh. , 21 , 52 .
3.
Neill
C. A.
Dingwall
M. M.
(1950 ) Arch. Dis. Childh. , 25 , 213 .
4.
Russell
A.
(1954 ) Proc. R. Soc. Med. , 47 , 1040 .
