10762
CONCLUSION : 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 .
 adverse effect: serotonin syndrome, fentanyl
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  serotonin syndrome, fentanyl 
Answer:
 adverse effect: serotonin syndrome, fentanyl