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A 53-year-old African American male with HIV was prescribed warfarin 5 mg/day for 12 months after diagnosis of idiopathic deep vein thrombosis and bilateral pulmonary emboli (target INR 2.5 [range 2.0-3.0]).
 ( potential therapeutic event: prescribed ,  A 53-year-old African American male with HIV: Subject, 53-year-old: Subject.Age, African American: Subject.Race, male: Subject.Gender, HIV: Subject.Disorder, warfarin 5 mg/day for 12 months: Treatment, warfarin: Treatment.Drug, 5 mg/day: Treatment.Dosage, 12 months: Treatment.Duration, idiopathic deep vein thrombosis and bilateral pulmonary emboli: 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:
 ( potential therapeutic event: prescribed ,  A 53-year-old African American male with HIV: Subject, 53-year-old: Subject.Age, African American: Subject.Race, male: Subject.Gender, HIV: Subject.Disorder, warfarin 5 mg/day for 12 months: Treatment, warfarin: Treatment.Drug, 5 mg/day: Treatment.Dosage, 12 months: Treatment.Duration, idiopathic deep vein thrombosis and bilateral pulmonary emboli: Treatment.Disorder) 