2012
Before ICU admission, the patient had suffered from painful mucositis causing severe dysphagia and bleeding, which was thought to be the result of chemotherapy.
 the patient had suffered from painful mucositis: Subject; mucositis: Subject.Disorder; severe dysphagia and bleeding: Effect; chemotherapy: Treatment; chemotherapy: Treatment.Route
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:
 the patient had suffered from painful mucositis: Subject; mucositis: Subject.Disorder; severe dysphagia and bleeding: Effect; chemotherapy: Treatment; chemotherapy: Treatment.Route