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: Our series of 3 patients supports a causal connection between bleomycin and scleroderma.
Example Output: adverse drug event

Example Input: We know of no other reported cases of spontaneous muscle necrosis in association with diabetes insipidus and feel that there should be increased awareness of the association between the two.
Example Output: non-adverse drug event

Example Input: CONCLUSIONS: Herpes zoster reactivation may occur following LASIK.
Example Output:
non-adverse drug event