1086
RESULTS: A patient developed a bilaterally symmetric bull's-eye maculopathy 45 years after taking quinacrine for 18 months as prophylaxis against malaria.
 ( adverse event: developed ,  A patient: Effect, bilaterally symmetric bull's-eye maculopathy: Effect, 45 years after taking quinacrine for 18 months: Treatment, 45 years after: Treatment.Time_elapsed, 18 months: Treatment.Time_elapsed, quinacrine: Treatment.Drug, malaria: 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: developed ,  A patient: Effect, bilaterally symmetric bull's-eye maculopathy: Effect, 45 years after taking quinacrine for 18 months: Treatment, 45 years after: Treatment.Time_elapsed, 18 months: Treatment.Time_elapsed, quinacrine: Treatment.Drug, malaria: Treatment.Disorder) 