Abstract

References
1.
Beet
E. A.
(1954 ) Trans. R. Soc. trop. Med. Hyg. , 48 , 309 .
2.
Buck
S. C.
(1954 ) Personal communication.
3.
Davies
J. N. P.
(1949 ) E. Afr. med. J. , 26 , 76 .
4.
Edge
J. R.
(1946 ) Lancet , ii , 675 .
5.
Edington
G. M.
(1954 ) Trans. R. Soc. trop. Med. Hyg. , 48 , 419 .
6.
Egger
P.
(1944 ) Schweiz. Z. Path. , 7 , 237 .
7.
Fossel
M.
(1942 ) Beitr. path. Anat. , 107 , 241 .
8.
Gelfand
M.
(1954 ) Personal communication.
9.
Gillanders
A. D.
(1951 ) Brit. Heart J. , 13 , 177 .
10.
Gray
I. R.
(1951 ) Brit. Heart J. , 13 , 387 .
11.
Higginson
J.
(1952 ) Ann. Rep. S. Afr. Inst. med. Res. , p. 52 .
12.
Hughes
M. H.
(1953 ) Personal communication.
13.
Löffler
W.
(1936 ) Schweiz. med. Wschr. , 66 , 817 .
14.
McFadzean
J. A.
(1953 ) Personal communication.
15.
Nwokolo
C.
(1955 ) W. Afr. med. J. , 4 , 103 .
16.
O'Brien
W.
(1954 ) Brit. med. J. , ii , 899 .
17.
Pearce
J. M.
(1950 ) Pathogenesis and Pathology of Viral Disease. Edited by
Kidd
J. C.
New York.
