3175
All patients had taken phenytoin for variable time periods ( range 16 - 80 days ; mean : 40 ) and were on the medication when the skin lesions first appeared .
 skin lesions, phenytoin
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:
 skin lesions, phenytoin