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: The diagnosis of C. difficile was confirmed by a stool-cytotoxin test and endoscopic examination.
Example Output: non-adverse drug event

Example Input: Furthermore, therapy with dantrolene has been demonstrated to be beneficial in the treatment of MH associated with diabetic coma.
Example Output: non-adverse drug event

Example Input: Findings from biopsy specimens of skin and jejunum suggested a cell-mediated pathogenesis, and lymphoproliferative studies of the patient's mononuclear cells revealed a positive response to phenobarbital.
Example Output:
non-adverse drug event