Assertion: mastectomy | /r/HasProperty | standard treatment
Facets:
value: for stage 0 breast cancer
type: OTHER
value: until the mid-1980s
type: TEMPORAL
Source sentences:
text: Mastectomy, or the removal of your breast, was once the standard treatment for stage 0 breast cancer, but it’s not always necessary today.
text: Until the mid-1980s, mastectomy was the standard of care for any stage of breast cancer, and research has shown that surgeons trained before 1981 recommend mastectomy more often than lumpectomy.