12148
We discuss our observations in the cases of two patients with acyclovir neurotoxicity and review the findings of all previous reports in the English language literature .
 neurotoxicity, acyclovir
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:
 neurotoxicity, acyclovir