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We report a case of pancytopenia in a 23-year-old man with Crohn's disease who was treated with 5-aminosalicylic acid (Pentasa; Nisshin, Tokyo, Japan) 3.0 g/day.
 a 23-year-old man with Crohn's disease: Subject; 23-year-old: Subject.Age; man: Subject.Gender; pancytopenia: Effect; 5-aminosalicylic acid (Pentasa; Nisshin, Tokyo, Japan) 3.0 g/day: Treatment; Crohn's disease: Treatment.Disorder; 5-aminosalicylic acid: Treatment.Drug; Pentasa: Treatment.Drug; 3.0 g/day: Treatment.Dosage
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 23-year-old man with Crohn's disease: Subject; 23-year-old: Subject.Age; man: Subject.Gender; pancytopenia: Effect; 5-aminosalicylic acid (Pentasa; Nisshin, Tokyo, Japan) 3.0 g/day: Treatment; Crohn's disease: Treatment.Disorder; 5-aminosalicylic acid: Treatment.Drug; Pentasa: Treatment.Drug; 3.0 g/day: Treatment.Dosage