1054
Painful neutrophilic skin lesions were observed in two children receiving granulocyte colony-stimulating factor (G-CSF) for treatment of idiopathic neutropenia.
 ( adverse event: observed ,  two children: Subject, two: Subject.Population, children: Subject.Age, Painful neutrophilic skin lesions: Effect, granulocyte colony-stimulating factor (G-CSF): Treatment, granulocyte colony-stimulating factor: Treatment.Drug, idiopathic neutropenia: Treatment.Disorder) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: adverse event,potential therapeutic event, Arguments type: Treatment.Disorder,Treatment.Time_elapsed,Treatment.Dosage,Subject.Race,Treatment.Drug,Treatment.Route,Subject.Disorder,Treatment.Freq,Treatment,Effect,Subject.Population,Treatment.Duration,Combination.Drug,Subject,Subject.Age,Subject.Gender. 
Text: {0} 
Answer:
 ( adverse event: observed ,  two children: Subject, two: Subject.Population, children: Subject.Age, Painful neutrophilic skin lesions: Effect, granulocyte colony-stimulating factor (G-CSF): Treatment, granulocyte colony-stimulating factor: Treatment.Drug, idiopathic neutropenia: Treatment.Disorder) 