Assertion: retrievable filter | /r/HasProperty | approved for use
Facets:
value: as permanent devices
type: MANNER
Source sentences:
text: Even though retrievable filters were also approved for use as permanent devices, it turns out they may not be safe for longterm implantation.
text: However, even though retrievable filters were also approved for use as permanent devices, it turns out they may not be safe for longterm implantation either.