4306
To our knowledge , four cases of interstitial pneumonitis associated with fludarabine have been reported in medical literature .
 interstitial pneumonitis, fludarabine
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:
 interstitial pneumonitis, fludarabine