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We report two adults who received gabapentin ( GBP ) and subsequently developed behavioural side effects .
 behavioural side effects, gabapentin; behavioural side effects, GBP
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:
 behavioural side effects, gabapentin; behavioural side effects, GBP