Abstract

References
1.
Wood
W. R. Forrester
(1950 ) Lancet (i ), 1132 .
2.
Harrison
C. V.
Wood
P.
(1949 ) Brit. heart J. , 11 , 205 .
3.
Thompson
S. A.
(1948 ) Amer. Practit. (Philadelphia) , 3 , 81 .
