Abstract

References
1.
de Silva, P.C.C.
: Quart. J. Med.
8 : 97 , 1939 .
2.
Ellis, R.W.B.
and
Van Creveld, S.
: Arch. Dis. Child.
15 : 65 , 1940 .
3.
Goeckerman, W.H.D.
: Arch. Derm. Syph. ( Chicago ) 1 : 396 , 1920 .
4.
Norman, A.P.
: Congenital Abnormalities in Infancy . Oxford , Blackwell , 1963 , p. 284 .
5.
Potter, Edith
: Pathology of the Foetus and Newborn . Chicago , Year Book Publishers , 1952 , p. 529 .
6.
Romanes, G.J.
: Personal communication , 1964 .
7.
Weech, A.A.
: Amer. J. Dis. Child.
37 : 766 , 1929 .
