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]: Clinical and electrodiagnostic findings are discussed in detail and a brief review of the literature is presented.
[EX A]: non-adverse drug event

[EX Q]: Three patients receiving gold salt treatment for rheumatoid arthritis developed severe aplastic anemia.
[EX A]: adverse drug event

[EX Q]: Massive CBZ OD may produce a reversible encephalopathy that includes cortical hyperexcitability, a profound burst-suppression EEG pattern, and cranial nerve areflexia.
[EX A]:
adverse drug event