798
Healthcare professionals should be aware of the possible development of serotonin syndrome as a complication of initiation of fentanyl and other phenylpiperidine opioids in patients treated with SSRIs.
 patients: Subject; serotonin syndrome: Effect; fentanyl and other phenylpiperidine opioids: Treatment; treated with SSRIs: Treatment; fentanyl: Treatment.Drug; phenylpiperidine opioids: Treatment.Drug; SSRIs: Treatment.Drug; phenylpiperidine opioids: Combination.Drug; fentanyl: Combination.Drug; SSRIs: Combination.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:
 patients: Subject; serotonin syndrome: Effect; fentanyl and other phenylpiperidine opioids: Treatment; treated with SSRIs: Treatment; fentanyl: Treatment.Drug; phenylpiperidine opioids: Treatment.Drug; SSRIs: Treatment.Drug; phenylpiperidine opioids: Combination.Drug; fentanyl: Combination.Drug; SSRIs: Combination.Drug