Abstract

References
1.
Bull
J W D
. (1948 ) Proc. R. Soc. Med.
41 , 513 .
2.
Frykholm
R
. (1951 ) Acta chir. scand. Suppl.
160 .
3.
Wilkinson
M
. (1960 ) Brain
83 , 589 .
4.
Wolf
B S
Khilnani
M
Malis
L
. (1956 ) J. Neurol Psychiat.
18 , 97 .
