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STUDY DESIGN: Case reports are presented of three premature infants (mean gestational age 27 weeks) cared for in the intensive care nursery in whom clinically significant septal hypertrophy and left ventricular outflow tract obstruction developed during dexamethasone treatment for bronchopulmonary dysplasia.
 three premature infants (mean gestational age 27 weeks) cared for in the intensive care nursery: Subject; three: Subject.Population; premature infants (mean gestational age 27 weeks): Subject.Age; clinically significant septal hypertrophy and left ventricular outflow tract obstruction: Effect; during dexamethasone treatment for bronchopulmonary dysplasia: Treatment; dexamethasone: Treatment.Drug; bronchopulmonary dysplasia.: Treatment.Disorder
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:
 three premature infants (mean gestational age 27 weeks) cared for in the intensive care nursery: Subject; three: Subject.Population; premature infants (mean gestational age 27 weeks): Subject.Age; clinically significant septal hypertrophy and left ventricular outflow tract obstruction: Effect; during dexamethasone treatment for bronchopulmonary dysplasia: Treatment; dexamethasone: Treatment.Drug; bronchopulmonary dysplasia.: Treatment.Disorder