201
Several such HBV reactivations were reported after combined rituximab and multiagent chemotherapy for B - cell lymphomas .
 HBV reactivations, rituximab
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:
 HBV reactivations, rituximab