Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

[EX Q]: Although hypophosphatemia induced by aluminum-containing antacids is rare, treatment of peptic ulcer disease with a combination of two aluminum-containing agents may increase the risk of clinically significant hypophosphatemia.
[EX A]: non-adverse drug event

[EX Q]: The eighth exhibited concentric constriction.
[EX A]: non-adverse drug event

[EX Q]: We studied 13 healthy volunteer subjects, performing three hepatobiliary scans in each one.
[EX A]:
non-adverse drug event

