Abstract

References
1.
Dilley
J J
Kierland
R R
Randall
R V
Shick
R M
. (1968 ) J. Amer. med. Ass.
204 , 670 .
2.
Emerson
P A
. (1966 ) Thorax
21 , 247 .
3.
Hurwitz
P A
Pinals
D J
. (1964 ) Radiology
82 , 246 .
4.
Pettitt
G
Whitmore
D
. (1966 ) Guy's Hosp. Rep.
115 , 9 .
5.
Samman
P D
White
W F
. (1964 ) Brit. J. Derm.
76 , 153 .
6.
Waldenstrom
J
. (1960–61 ) Harvey Lect.
56 , 211 .
