957
Despite the low dosage of warfarin, international normalized ratio (INR) was markedly elevated from 1.15 to 11.28 for only 4 days, and bleeding symptoms concurrently developed.
 ( adverse event: developed.,  international normalized ratio (INR) was markedly elevated: Effect, bleeding symptoms: Effect, low dosage of warfarin: Treatment, warfarin: Treatment.Drug, low dosage: Treatment.Dosage, 1.15: Treatment.Dosage, 11.28: Treatment.Dosage, 4 days: Treatment.Duration) 
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.,  international normalized ratio (INR) was markedly elevated: Effect, bleeding symptoms: Effect, low dosage of warfarin: Treatment, warfarin: Treatment.Drug, low dosage: Treatment.Dosage, 1.15: Treatment.Dosage, 11.28: Treatment.Dosage, 4 days: Treatment.Duration) 