6223
Renal failure after high - dose methotrexate in a child homozygous for MTHFR C677 T polymorphism .
 Renal failure, methotrexate
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:
 Renal failure, methotrexate