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References
1.
Chopra
R N
Ray
P N
(1939 ) Indian med. Gaz . 74 , 65 .
2.
Chuttani
M K
(1967 ) Brit. med. J . 4 , 203 .
3.
Greenwood
B M
(1968 ) Lancet
2 , 380 .
4.
Matts
S G S
(1961 ) Brit. med. J . 1 , 165 .
5.
Nagaratnam
N
Ismail
M M
(1973 ) Trans, roy. Soc. trop. Med. Hyg . 67 , 803 .
6.
Patel
J C
(1954 ) J. med. Res . 42 , 279 .
7.
Tandon
B N
(1965 ) Gut
6 , 448 .