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.

Input: Consider Input: Considerable improvement of myasthenic symptoms was seen in all patients within 3-6 months after the initiation of this therapy.

Output: non-adverse drug event


Input: Consider Input: Symptomatic air trapped in the spine after lumbar epidural corticosteroid injection.

Output: non-adverse drug event


Input: Consider Input: Asthmatic medications can place the patient at risk of dental erosion by reducing salivary protection against extrinsic or intrinsic acids.


Output: non-adverse drug event