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Aggressive hydration, urinary alkalinization, and leucovorin were continued during the period of elevated methotrexate levels, with the patient receiving a course of hemodialysis and a dose of carboxypeptidase G2.
 the patient: Subject; Aggressive hydration, urinary alkalinization, and leucovorin: Treatment; elevated methotrexate: Treatment; course of hemodialysis and a dose of carboxypeptidase G2: Treatment; leucovorin: Treatment.Drug; methotrexate: Treatment.Drug; carboxypeptidase G2: Treatment.Drug; a dose: 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: potential therapeutic event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Treatment.Time_elapsed, Subject.Disorder, Subject.Race, Treatment.Route, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 the patient: Subject; Aggressive hydration, urinary alkalinization, and leucovorin: Treatment; elevated methotrexate: Treatment; course of hemodialysis and a dose of carboxypeptidase G2: Treatment; leucovorin: Treatment.Drug; methotrexate: Treatment.Drug; carboxypeptidase G2: Treatment.Drug; a dose: Treatment.Dosage