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: Interstitial granulomatous dermatitis associated with darifenacin.
Example Output: adverse drug event

Example Input: Both had impaired lung function and abnormal computed tomographic scans, and their condition improved when nitrofurantoin was withdrawn and corticosteroid treatment commenced.
Example Output: adverse drug event

Example Input: Progressive multifocal leukoencephalopathy after stem cell transplantation, unsuccessfully treated with cidofovir.
Example Output:
non-adverse drug event