2909
Epstein - Barr virus - associated lymphoproliferative disorder in a patient with rheumatoid arthritis on methotrexate and rofecoxib : idiosyncratic reaction or pharmacogenetics ?
 Epstein - Barr virus - associated lymphoproliferative disorder, methotrexate; Epstein - Barr virus - associated lymphoproliferative disorder, rofecoxib
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:
 Epstein - Barr virus - associated lymphoproliferative disorder, methotrexate; Epstein - Barr virus - associated lymphoproliferative disorder, rofecoxib