3254
CONCLUSION : Long - term treatment with rifabutin may have a reversible and previously undescribed side - effect on retinal function .
 side - effect on retinal function, rifabutin
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:
 side - effect on retinal function, rifabutin