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Seventy-four per cent of patients with epileptogenic disorders seen at the Emergency Unit at Groote Schuur Hospital were on phenytoin and 11.6% of these had blood levels in the toxic range.
 Seventy-four per cent of patients with epileptogenic disorders: Subject; 11.6% of these: Subject; Seventy-four per cent: Subject.Population; 11.6%: Subject.Population; blood levels in the toxic range: Effect; phenytoin: Treatment; phenytoin: Treatment.Drug; epileptogenic: 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:
 Seventy-four per cent of patients with epileptogenic disorders: Subject; 11.6% of these: Subject; Seventy-four per cent: Subject.Population; 11.6%: Subject.Population; blood levels in the toxic range: Effect; phenytoin: Treatment; phenytoin: Treatment.Drug; epileptogenic: Treatment.Disorder