Abstract

References
1.
Arslan
M
(1953 ) Minerva otorinolaring . 3 , 4
2.
Clemis
J D
Shambaugh
G E
jr
(1966 ) Laryngoscope, St Louis
76 , 1029
3.
Cawthorne
T E
(1943 ) J. Laryng . 58 , 363
4.
Cawthorne
T E
(1957 ) J. Laryng . 71 , 524
5.
House
W F
(1962 ) Laryngoscope, St Louis
72 , 713
6.
House
W F
(1964 ) Arch. Otolaryng . 79 , 338
7.
House
W F
(1965 ) Laryngoscope, St Louis
75 , 1547
8.
House
W F
(1966 ) Arch. Otolaryng . 84 , 616
9.
James
J A
(1965 ) Laryngoscope, St Louis
75 , 1552
10.
James
J A
Dalton
G A
Bullen
M A
Freundlich
H F
Wells
P N
(1962 ) Brit. med. J . ii , 1346
11.
Portmann
G
(1927 ) Arch. Otolaryng . 6 , 309
12.
Shea
J J
(1966 ) Arch. Otolaryng . 83 , 316
13.
Woodman
E M
(1939 ) Proc. R. Soc. Med . 32 , 1642
