Assertion: mouth ulcer | /r/AtLocation | association
Facets:
value: by many different mechanisms
type: OTHER
value: with many diseases
type: OTHER
Source sentences:
text: Mouth ulcers are very common, occurring in association with many diseases and by many different mechanisms, but usually there is no serious underlying cause.
text: Mouth ulcers are very common, occurring in association with many diseases and by many different mechanisms, but usually there is no serious underlying cause.