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.

[EX Q]: CONCLUSION: The new quinolone derivatives (levofloxacin, sparfloxacin, grepafloxacin, trovafloxacin, gatifloxacin and moxifloxacin), also called gyrase inhibitors, are known for their potential to cause central nervous system-related adverse effects, including headache, dizziness and insomnia.
[EX A]: adverse drug event

[EX Q]: Our series of 3 patients supports a causal connection between bleomycin and scleroderma.
[EX A]: adverse drug event

[EX Q]: CONCLUSIONS: Acute severe hepatitis though rare is occasionally observed with EGFR inhibitors gefitinib or erlotinib.
[EX A]:
adverse drug event