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: Although a definite association has not been proven, clinicians should be aware of the possibility of agranulocytosis while using quetiapine.
[EX A]: adverse drug event

[EX Q]: 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.
[EX A]: non-adverse drug event

[EX Q]: Analyzing the cardiac time intervals during pregnancy can improve perinatal outcome.
[EX A]:
non-adverse drug event