Assertion: transseptal puncture | /r/HasProperty | developed by braunwald
Facets:
value: at the national heart institute
type: LOCATION
Source sentences:
text: The transseptal puncture was developed by Ross, Braunwald and Morrow at the National Heart Institute (now the National Heart, Lung, and Blood Institute), Bethseda in the late 1950s to allow left heart catheterisation, principally for the evaluation of valvular heart disease.