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We report three cases of IFN beta induced hepatitis in MS and discuss the pathology findings and possible mechanisms of drug - induced liver injury .
 adverse effect: hepatitis, IFN beta; adverse effect: liver injury, IFN beta
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:  hepatitis, IFN beta; liver injury, IFN beta 
Answer:
 adverse effect: hepatitis, IFN beta; adverse effect: liver injury, IFN beta