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The patient was found to have no motile sperm with a normal sperm count , while taking a dose of 400 mg / day of carbamazepine .
 no motile sperm, carbamazepine
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:
 no motile sperm, carbamazepine