Assertion: peptic ulcer | /r/CreatedBy | certain medications
Facets:
value: by smoking
type: OTHER
Source sentences:
text: Now we know that most peptic ulcers are caused by a particular bacterial infection in the stomach and upper intestine, by certain medications, or by smoking.
text: Peptic ulcers can be caused by a number of conditions, including certain medications, excessive alcohol use, and other medical conditions.