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Because folinic acid was unlikely to be associated with this condition , neurotoxicity due to high - dose 5 - fluorouracil was highly suspected .
 folinic acid, neurotoxicity, 5 - fluorouracil
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 folinic acid, neurotoxicity, 5 - fluorouracil