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A 71-year-old man with paroxysmal atrial fibrillation who had a previous anterior myocardial infarction exhibited granulocytopenia 8 days following the administration of oral sustained-release procainamide (750 mg/day).
 A 71-year-old man with paroxysmal atrial fibrillation who had a previous anterior myocardial infarction: Subject; 71-year-old: Subject.Age; man: Subject.Gender; anterior myocardial infarction: Subject.Disorder; granulocytopenia: Effect; oral sustained-release procainamide (750 mg/day): Treatment; 8 days: Treatment.Time_elapsed; sustained-release procainamide: Treatment.Drug; oral: Treatment.Route; 750 mg/day: Treatment.Dosage; paroxysmal atrial fibrillation: 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:
 A 71-year-old man with paroxysmal atrial fibrillation who had a previous anterior myocardial infarction: Subject; 71-year-old: Subject.Age; man: Subject.Gender; anterior myocardial infarction: Subject.Disorder; granulocytopenia: Effect; oral sustained-release procainamide (750 mg/day): Treatment; 8 days: Treatment.Time_elapsed; sustained-release procainamide: Treatment.Drug; oral: Treatment.Route; 750 mg/day: Treatment.Dosage; paroxysmal atrial fibrillation: Treatment.Disorder