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: A retrospective epidemiological study of deaths from hepatic angiosarcoma (HAS) in the U.S. showed that during 1964--74 there were 168 such cases, of which 37 (22%) were associated with previously known causes (vinyl chloride, 'Thorotrast', and inorganic arsenic) and 4 (3.1%) of the remaining 131 cases with the use of androgenic-anabolic steroids.
Example Output: adverse drug event

Example Input: In 2 cats, rebound hyperglycemia was diagnosed on routine serial blood glucose determinations.
Example Output: non-adverse drug event

Example Input: A total of 64 patients from 10 series have received the drug from one to 25 months, usually in doses of 50-150 micrograms every eight hours by subcutaneous injection.
Example Output:
non-adverse drug event