Assertion: frontal sinus | /r/HasProperty | absent
Facets:
value: in up to 10%
type: OTHER
value: in 10% of population
type: LOCATION
value: at birth
type: TEMPORAL
Source sentences:
text: The frontal sinuses are absent at birth, but are generally fairly well developed between the seventh and eighth years, only reaching their full size after puberty.
text: However, frontal sinuses are absent only in 10% of population.
text: The frontal sinus may be absent in up to 10% of
text: The frontal sinus may be absent in up to 10% of