2856
In three of these patients the infection was clinically unsuspected; in the fourth, cutaneous herpes zoster developed after administration of 300 mg of cytarabine daily for the preceding five days.
 ( adverse event: developed ,  three of these patients: Subject, three: Subject.Population, cutaneous herpes zoster: Effect, 300 mg of cytarabine daily for the preceding five days: Treatment, 300 mg: Treatment.Dosage, cytarabine: Treatment.Drug, daily: Treatment.Freq, preceding five days: Treatment.Duration) 
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: developed ,  three of these patients: Subject, three: Subject.Population, cutaneous herpes zoster: Effect, 300 mg of cytarabine daily for the preceding five days: Treatment, 300 mg: Treatment.Dosage, cytarabine: Treatment.Drug, daily: Treatment.Freq, preceding five days: Treatment.Duration) 