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Methotrexate (MTX) is a commonly used second line agent for RA, and there have been several recent reports of Epstein-Barr virus (EBV)-associated polyclonal B cell lymphoproliferative disorder in MTX-treated RA patients.
 RA patients: Subject; Epstein-Barr virus (EBV)-associated polyclonal B cell lymphoproliferative disorder: Effect; MTX-treated: Treatment; MTX: Treatment.Drug; RA: Treatment.Disorder
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 RA patients: Subject; Epstein-Barr virus (EBV)-associated polyclonal B cell lymphoproliferative disorder: Effect; MTX-treated: Treatment; MTX: Treatment.Drug; RA: Treatment.Disorder