Abstract

References
1.
Bauer
H J
. (1958 ) Acta tuberc. scand. Suppl. 42.
2.
Brodman
K
Erdmann
A J
Lorge
I
Wolff
H G
. (1951 ) J. Amer. med. Ass.
145 , 152 .
3.
Butterfield
W J M
. (1962 ) Guy's Hosp. Gaz.
76 , 470 .
4.
Clifton
M
. (1957 ) In: Chronic Bronchitis Emphysema and Cor Pulmonale . Ed.
Stuart-Harris
C H
Hanley
T
. Bristol ; p 214 .
5.
Cochrane
A L
Garland
L H
. (1952 ) Lancet
ii , 505 .
6.
Cochrane
A L
Higgins
I T T
. (1961 ) Brit. J. prey. soc. Med.
15 , 1 .
7.
Cochrane
A L
Moore
F
Thomas
J
. (1961 ) Tubercle, Lond.
42 , 64 .
8.
Doll
W R
Hill
A B
. (1952 ) Brit. med. J.
ii , 1271 .
9.
Eley
A J
Gough
J H
. (1960 ) Tubercle, Lond.
41 , 435 .
10.
Fairbairn
A S
Wood
C H
Fletcher
C M
. (1959 ) Brit. J. prev. soc. Med.
13 , 175 .
11.
Fay
J W J
Ashford
J R
. (1960 ) Brit. J. industr. Med.
17 , 279 .
12.
Fletcher
C M
. (1955 ) A.M.A. Arch. industr. Hlth.
11 , 17 .
13.
Fletcher
C M
. (1960 ) Controlled Clinical Trials , C.I.O.M.S.
Oxford ; p 27 .
14.
Fletcher
C M
Elmes
P C
Fairbairn
A S
Wood
C H
. (1959 ) Brit. med. J.
ii , 257 .
15.
Fletcher
C M
Oldham
P D
. (1949 ) Brit. J. industr. Med.
6 , 168 .
16.
Fletcher
C M
Oldham
P D
. (1951 ) Brit. J. industr. Med.
8 , 138 .
17.
Groth-Peterson
E
Lorgreen
A
Thillemann
J
. (1952 ) Acta tuberc. scand.
26 , 13 .
18.
Leopold
J G
Gough
J
. (1957 ) Thorax
12 , 219 .
19.Medical Research Council (1961 ) Brit. med. J.
ii , 1665 .
20.Ministry of Pensions and Insurance National (1959 ) National Insurance (Industrial Injuries) (Prescribed Diseases) Regulations 1959 . No. 467, paragraph 25(2) H.M.S.O.
21.
Miall
W E
. (1955 ) Ann. Rheum. Dis.
14 , 150 .
22.
Miall
W E
Caplan
A
Cochrane
A L
Kilpatrick
G S
Oldham
P D
. (1953 ) Brit. med. J.
ii , 1231 .
23.
Miller
D L
Jones
R A
. (1963 ) Amer. Rev. resp. Dis. (in press).
24.
Reid
L McA
. (1954 ) Lancet
i , 275 .
25.
Rogan
J M
Ashford
J R
Chapman
P J
Duffield
D P
Fay
J W J
Rae
S
. (1961 ) Brit. med. J.
i , 1337 .
26.
Rose
G A
. (1962 ) Bull. World Hlth Org.
27 , 645 .
27.
Rumball
A
Acheson
E D
. (1963 ) Brit. med. J.
i , 423 .
28.
Sanders
B S
. (1962 ) Amer. J. Publ. Hlth
52 , 1648 .
29.
Siegel
M
Lee
S L
Widelock
D
Reilly
E B
Wise
G J
Zingale
S B
Fuerst
H T
. (1962 ) J. chron. Dis.
15 , 131 .
30.
Smith
D
. (1956 ) Brit. med. J.
i , 654 .
31.
Spence
J
. (1953 ) Lancet
ii , 629 .
32.
Stradling
P
Johnston
R N
. (1955 ) Lancet
i , 1247 .
33.
Wise
M E
Oldham
P D
. (1963 ) Brit. J. industr. Med.
20 , 145 .
34.World Health Organization (1959 ) Tech. Rep. Wld Hlth. Org.
168 , 15 .
35.
Yerushalmy
J
Harkness
J T
Cope
J H
Kennedy
B R
. (1950 ) Amer. Rev. Tuberc.
61 , 443 .
