580
However , continued low - dose MTX led , in spite of normal liver tests , 8 years after the last biopsy to liver failure and death in 1 of our patients .
 adverse effect: death, MTX; adverse effect: liver failure, MTX
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:  death, MTX; liver failure, MTX 
Answer:
 adverse effect: death, MTX; adverse effect: liver failure, MTX