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We report 2 cases of maculopapular eruption and fever in patients infected with human immunodeficiency virus (HIV) on the 2nd day of first administration of ritonavir, a protease inhibitor.
 patients: Subject; maculopapular eruption and fever: Effect; ritonavir: Treatment; human immunodeficiency virus: Treatment.Disorder; ritonavir: Treatment.Drug; 2nd day of first administration: Treatment.Time_elapsed
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:
 patients: Subject; maculopapular eruption and fever: Effect; ritonavir: Treatment; human immunodeficiency virus: Treatment.Disorder; ritonavir: Treatment.Drug; 2nd day of first administration: Treatment.Time_elapsed