Assertion: scoliosis's surgery | /r/HasProperty | performed over several vertebral levels
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Surgery is often performed over several vertebral levels and is often more complex than common surgeries for degenerative conditions, which are performed over only a few levels.
text: Surgery is often performed over several vertebral levels and is often more complex than common surgeries for degenerative conditions, which are performed over only a few levels.