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We describe 2 cases of SJS related to nevirapine use and review the literature on this newly recognized association .
 adverse effect: SJS, nevirapine
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  SJS, nevirapine 
Answer:
 adverse effect: SJS, nevirapine