Abstract

References
1.
Correll
H L
Lindert
M C F
. (1949 ) Amer. Heart J . 37 , 446 .
2.
Iglauer
S
Schwartz
B A
. (1936 ) Ann. Otol. (St. Louis)
45 , 875 .
3.
James
A H
. (1958 ) Lancet
i , 771 .
4.
Kopald
H H
Roth
H P
Fleshler
B
Pritchard
W H
. (1964 ) New Engl. J. Med . 271 , 1238 .
5.
MacKenzie
J
. (1906 ) Brit. med. J . ii , 1107 .
6.
Weiss
S
Ferris
E B
Jr
(1934 ) Arch. intern. Med . 54 , 931 .
