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Two patients, each receiving warfarin for stroke prophylaxis in association with chronic atrial fibrillation, developed adverse effects after the initiation of tolterodine for urinary disorders.
 Two patients: Subject; Two: Subject.Population; chronic atrial fibrillation: Subject.Disorder; adverse effects: Effect; receiving warfarin for stroke prophylaxis in association with chronic atrial fibrillation: Treatment; after the initiation of tolterodine for urinary disorders: Treatment; stroke: Treatment.Disorder; urinary disorders: Treatment.Disorder; tolterodine: Treatment.Drug; warfarin: Treatment.Drug; tolterodine: Combination.Drug; warfarin: Combination.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 Two patients: Subject; Two: Subject.Population; chronic atrial fibrillation: Subject.Disorder; adverse effects: Effect; receiving warfarin for stroke prophylaxis in association with chronic atrial fibrillation: Treatment; after the initiation of tolterodine for urinary disorders: Treatment; stroke: Treatment.Disorder; urinary disorders: Treatment.Disorder; tolterodine: Treatment.Drug; warfarin: Treatment.Drug; tolterodine: Combination.Drug; warfarin: Combination.Drug