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 Input:
RESULTS: Withdrawal of oral colchicine therapy was followed by rapid corneal wound healing in both patients.

Ex Output:
non-adverse drug event


Ex Input:
Delayed neurotoxicity of intraventricular interleukin-2: a case report.

Ex Output:
adverse drug event


Ex Input:
Presented is a case of acute renal failure induced by acetazolamide therapy for glaucoma.

Ex Output:

adverse drug event