7688
It is believed that this is the first reported case of reversible azathioprine - induced cholestasis associated with histological evidence of bile duct injury .
 adverse effect: cholestasis, azathioprine
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:  cholestasis, azathioprine 
Answer:
 adverse effect: cholestasis, azathioprine