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After seven months' continuous treatment for suspected tuberculosis with rifampicin and ethambutol a nine-year-old boy developed polyarthritis, rash and hepatitis in association with anti-native DNA antibodies and positive antinuclear factor.
 a nine-year-old boy: Subject; nine-year-old: Subject.Age; boy: Subject.Gender; polyarthritis, rash and hepatitis in association with anti-native DNA antibodies and positive antinuclear factor: Effect; seven months' continuous treatment: Treatment; with rifampicin and ethambutol: Treatment; rifampicin: Treatment.Drug; ethambutol: Treatment.Drug; tuberculosis: Treatment.Disorder; seven months: Treatment.Time_elapsed; ethambutol: Combination.Drug; rifampicin: 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:
 a nine-year-old boy: Subject; nine-year-old: Subject.Age; boy: Subject.Gender; polyarthritis, rash and hepatitis in association with anti-native DNA antibodies and positive antinuclear factor: Effect; seven months' continuous treatment: Treatment; with rifampicin and ethambutol: Treatment; rifampicin: Treatment.Drug; ethambutol: Treatment.Drug; tuberculosis: Treatment.Disorder; seven months: Treatment.Time_elapsed; ethambutol: Combination.Drug; rifampicin: Combination.Drug