Assertion: thermal ablation | /r/HasProperty | safe alternative
Facets:
Source sentences:
text: It requires no general anesthesia and is a safe alternative to open back surgery.
text: Endovenous thermal ablation (EVTA) by radiofrequency or laser is a safe and effective treatment of refluxing great saphenous veins  (GSVs) and has replaced traditional high ligation and stripping in official recommendations of various leading Vascular Societies in the United States and the United Kingdom.