4637
We describe a patient with a liver abscess due to Entamoeba histolytica , in whom metronidazole therapy ( total dose , 21 g over 14 days ) was complicated by reversible deafness , tinnitus , and ataxia and who relapsed 5 months later with a splenic abscess .
 ataxia, metronidazole; liver abscess, metronidazole; reversible deafness, metronidazole; splenic abscess, metronidazole; tinnitus, metronidazole
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 ataxia, metronidazole; liver abscess, metronidazole; reversible deafness, metronidazole; splenic abscess, metronidazole; tinnitus, metronidazole