12145
OBJECTIVE : To report a case of serotonin syndrome associated with interaction between fentanyl and citalopram , as evidenced by medication history , clinical features and reversal following discontinuation of fentanyl .
 serotonin syndrome, citalopram; serotonin syndrome, fentanyl; serotonin syndrome, fentanyl
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 serotonin syndrome, citalopram; serotonin syndrome, fentanyl; serotonin syndrome, fentanyl