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A study of in vitro reactivity to L-T4, as assessed by peripheral blood lymphocyte transformation, was carried out in a patient with Hashimoto's disease who developed leukopenia during treatment with L-T4.
 a patient with Hashimoto's disease: Subject; leukopenia: Effect; L-T4: Treatment; Hashimoto's disease: Treatment.Disorder; L-T4: Treatment.Drug
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:
 a patient with Hashimoto's disease: Subject; leukopenia: Effect; L-T4: Treatment; Hashimoto's disease: Treatment.Disorder; L-T4: Treatment.Drug