THE EFFECT OF A DEEP HELD INSPIRATION ON THE MURMUR OF SLIGHT AORTIC REGURGITATION IN YOUNG SUBJECTSBr Med J 1918; 1 doi: http://dx.doi.org/10.1136/bmj.1.2983.257 (Published 02 March 1918) Cite this as: Br Med J 1918;1:257
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