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.

Example Input: Recent efforts have focused on heightened surveillance to detect contamination before transfusion to limit recipient morbidity and mortality.
Example Output: non-adverse drug event

Example Input: Both the psoriasis and the HCL cleared.
Example Output: non-adverse drug event

Example Input: Isoniazid causing breast tissue enlargement has been very rarely reported.
Example Output:
adverse drug event