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: When the disease recurred conventional amphotericin B was used again, but had to be stopped because of severe side effects.
Example Output: adverse drug event

Example Input: We report a 51-year-old male with adult T cell leukemia (ATL) who received a BMT from an HLA-identical unrelated donor.
Example Output: non-adverse drug event

Example Input: Arteriography demonstrated extensive pruning of the distal arterial tree along with bilateral external iliac artery dissections - a finding that is not often associated with young, normotensive patients with chronic ergot toxicity.
Example Output:
non-adverse drug event

