12874
CONCLUSIONS : Cefazolin was a probable cause of this patient 's leukopenia .
 adverse effect: leukopenia, Cefazolin
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  leukopenia, Cefazolin 
Answer:
 adverse effect: leukopenia, Cefazolin