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We describe two patients who experienced serious quetiapine adverse effects potentially mediated through an interaction with ritonavir-boosted atazanavir.
 two patients: Subject; two: Subject.Population; serious quetiapine adverse effects: Effect; ritonavir-boosted atazanavir: Treatment; ritonavir: Treatment.Drug; atazanavir: Treatment.Drug; ritonavir: Combination.Drug; atazanavir: 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; serious quetiapine adverse effects: Effect; ritonavir-boosted atazanavir: Treatment; ritonavir: Treatment.Drug; atazanavir: Treatment.Drug; ritonavir: Combination.Drug; atazanavir: Combination.Drug