457
CASES : " A " was an 8-year - old boy with attention deficit and chronic tic disorder who developed obsessive - compulsive symptoms within 2 weeks of starting risperidone .
 obsessive - compulsive symptoms, risperidone
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:
 obsessive - compulsive symptoms, risperidone