10241
OBJECTIVES : A delayed stroke - like leukoencephalopathy has been observed in patients receiving methotrexate ( MTX ) for childhood leukemia .
 stroke - like leukoencephalopathy, methotrexate; stroke - like leukoencephalopathy, MTX
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:
 stroke - like leukoencephalopathy, methotrexate; stroke - like leukoencephalopathy, MTX