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The aim of this paper is to report the case of rosaceiform eruption induced by erlotinib in an 81-year-old-man and to discuss the pathogenetic role of Demodex folliculorum mites, found in the present patient, using skin scraping.
 an 81-year-old-man: Subject; man: Subject.Gender; 81-year-old: Subject.Age; rosaceiform eruption: Effect; Demodex folliculorum mites: Effect; erlotinib: Treatment; skin scraping: Treatment; erlotinib: Treatment.Drug
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:
 an 81-year-old-man: Subject; man: Subject.Gender; 81-year-old: Subject.Age; rosaceiform eruption: Effect; Demodex folliculorum mites: Effect; erlotinib: Treatment; skin scraping: Treatment; erlotinib: Treatment.Drug