Assertion: atresia | /r/HasProperty | single
Facets:
value: usually
type: DEGREE
Source sentences:
text: In more than 90% of patients, the atresia is single; however, multiple atresias are reported in 6-20% of cases.
text: The atresia is usually single (>90%) but may be multiple in 6% to 20% of cases.31,32,49