Abstract

References
1.
Bakwin
H
(1958 ) J. Pediat.
52 , 339
2.
Binning
G
(1950 ) Canad. Med. Ass. J.
63 , 461
3.
Chamovitz
R
Rammelkamp
C H
Wannamaker
L W
Denny
F W
(1960 ) Pediatrics, Springfield , 26 , 355
4.Chief Medical Officer of the Ministry of Education (1954 ) Report for the Years 1952 and 1953
Hlth. Sch. Child, Lond .
5.Chief Medical Officer of the Ministry of Education (1958 ) Report for the Years 1956 and 1957
Hlth. Sch. Child, Lond .
6.
Dey
D L
(1952 ) Med. J. Aust.
i , 510
7.
Douglas
J W B
Blomfield
J M
Dey
D L
Dey
D L
(1958 ) Children Under Five . London
8.
Epstein
I M
(1937 ) Amer. J. Dis. Child.
53 , 1503
9.
Ersner
M S
Lerner
S S
(1956 ) Med. Clin. N. Amer.
40 , 1749
10.
Glover
J A
(1948 ) Arch. Dis. Childh.
23 , 1
11.
McCorkle
L P
Hodges
R G
Badger
G F
Dingle
J H
Jordan
W S
(1955 ) New Engl. J. Med.
252 , 1066
12.
Miller
F J W
Court
S D M
Walton
W S
Knox
E G
(1960 ) Growing up in Newcastle upon Tyne . London
13.Minister of Health (1955 ) Rep. Minist. Hlth., London (1954 )
14.
Wolman
I J
(1956 ) Quart. Rev. Pediat.
11 , 109
15.
Amati
G
(1954 ) Boll. Soc. ital. Biol. sper.
30 , 135
16.
Dougherty
T F
(1952 ) Physiol. Rev.
32 , 380
17.
Dubos
R Y
(1958 ) The Bacterial and Mycotic Infections of Man . Philadelphia &c.; p. 178
18.
Holmes
M C
Williams
R E O
(1958 ) J. Hyg. Camb.
56 , 43
19.
Imai
Y
(1954 ) J. Otorhino. Soc. Japan , 57 , 748 Excerpta Med. (1955)Sect. XI, 8, No. (1996)
20.
Otty
J H
(1961 ) Proc. R. Soc. Med.
54 , 175
21.
Pagnini
G
(1953 ) Valsalva
29 , 81
22.
Pirro
A F
(1953 ) Arch. ital. Otol.
62 , 157
23.
Pirro
A F
(1954 ) Boll. Soc. ital. Biol. sper.
30 , 139 Excerpta Med. (1955)Sect. XI, 8, No. 485
24.
Porcelli
T
(1950 ) Minerva Paediat . 2 , 593
25.
von Schürmann
F
(1954 ) Pract. oto-rhino-laryng . 16 , 153
26.
St Thomson
C.
Negus
V E
(1937 ) Diseases of the Nose and Throat . 4th ed. London
27.
Wright
A J
(1950 ) J. Laryng.
64 , 1
