Assertion: radiofrequency ablation | /r/ObjectUse | used as a treatment method
Facets:
value: for afib
type: TRANSITIVE-OBJECT
value: since the late 1990s
type: TEMPORAL
Source sentences:
text: Although radiofrequency ablation has been used as a treatment method for afib since the late 1990s, it is now being more widely accepted as a first-line therapy, or first treatment.