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Our findings suggest that hyperkalemia can develop with the use of low-dose heparin, within seven days of initiating heparin therapy, and that patients with diabetes mellitus or chronic renal insufficiency are especially predisposed to this complication.
 ( adverse event: develop ,  patients with diabetes mellitus or chronic renal insufficiency: Subject, diabetes mellitus: Subject.Disorder, chronic renal insufficiency: Subject.Disorder, hyperkalemia: Effect, low-dose heparin, within seven days of initiating heparin therapy: Treatment, low-dose: Treatment.Dosage, heparin: Treatment.Drug, within seven days: Treatment.Time_elapsed) 
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: develop ,  patients with diabetes mellitus or chronic renal insufficiency: Subject, diabetes mellitus: Subject.Disorder, chronic renal insufficiency: Subject.Disorder, hyperkalemia: Effect, low-dose heparin, within seven days of initiating heparin therapy: Treatment, low-dose: Treatment.Dosage, heparin: Treatment.Drug, within seven days: Treatment.Time_elapsed) 