Abstract

References
1.
Bettley
F. R.
(1950 ) Brit. J. Derm. , 62 , 330 .
2.
Mitchell-Heggs
G. B.
Borrie
P. F.
(1949 ) Brit. J. Derm. , 61 , 291 .
3.
Wartenburg
R.
(1945 ) Arch. Neurol. Psychiat., Chicago , 54 , 75 .
