Abstract

References
1.
Anderson
R
Brett
G Z
James
D G
Peters
P M
Thomson
A D
. (1963 ) Lancet
ii , 650 .
2.
Atwood
W G
Miller
R C
Nelson
C T
. (1966 ) Arch. Derm.
94 , 144 .
3.
Goldfarb
B L
Cohen
S S
. (1970 ) J. Amer. med. Ass.
211 , 1525 .
4.
Gresham
G A
Ackerley
A G
. (1958 ) J. clin. Path.
11 , 244 .
5.
Lukes
R J
Butler
J J
Hicks
E B
. (1966 ) Cancer (Philad.)
19 , 317 .
6.
Nickerson
D A
. (1937 ) Arch. Path.
24 , 19 .
