Abstract

References
1.
Carter
E. P.
, and
Howland
J.
, Johns Hopkins Hosp. Bull. , 1920 , xxxi , 551 –354 .
2.
Romberg
E. C.
, and
White
P. D.
, Boston Med. and Surg. Journ. , 1924 , cxc , 591 –592 .
3.
Whipham
T. R.
, Brit. Journ. Child. Dis. , Nov., 1915 , xii , pp. 321 –327 .
4.
Wilson
J. G.
, and
Grant
R. T.
, Heart , 1926 , xii , 295 –305 .
