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Case 4: A 61-year-old male alcoholic who remained completely abstinent while taking cyanamide for 3 years showed slight elevation of serum transaminases.
 ( adverse event: taking ,  61-year-old male alcoholic who remained completely abstinent: Subject, 61-year-old: Subject.Age, male: Subject.Gender, elevation of serum transaminases: Effect, cyanamide for 3 years: Treatment, cyanamide: Treatment.Drug, 3 years: Treatment.Duration, alcoholic: Treatment.Disorder) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: taking ,  61-year-old male alcoholic who remained completely abstinent: Subject, 61-year-old: Subject.Age, male: Subject.Gender, elevation of serum transaminases: Effect, cyanamide for 3 years: Treatment, cyanamide: Treatment.Drug, 3 years: Treatment.Duration, alcoholic: Treatment.Disorder) 