Assertion: carotid endarterectomy | /r/HasProperty | performed since 1950
Facets:
value: as a stroke-prevention method
type: PURPOSE
Source sentences:
text: Carotid endarterectomy has been performed since the 1950s as a stroke-prevention method.
text: Carotid endarterectomy has been performed since the 1950s as a stroke-prevention method.