926
SSRIs and fentanyl are commonly co-administered, especially in the setting of chronic or malignant pain, as underlying depression may contribute to the pathogenesis of pain.
 ( potential therapeutic event: in ,  SSRIs and fentanyl are commonly co-administered: Treatment, chronic or malignant pain: Treatment.Disorder, underlying depression: Treatment.Disorder, SSRIs: Treatment.Drug, fentanyl: Treatment.Drug, SSRIs: Combination.Drug, fentanyl: Combination.Drug) 
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:
 ( potential therapeutic event: in ,  SSRIs and fentanyl are commonly co-administered: Treatment, chronic or malignant pain: Treatment.Disorder, underlying depression: Treatment.Disorder, SSRIs: Treatment.Drug, fentanyl: Treatment.Drug, SSRIs: Combination.Drug, fentanyl: Combination.Drug) 