6796
However , a large case - control study included three cases of either Stevens - Johnson syndrome or toxic epidermal necrolysis associated with ofloxacin use , but no details of the cases were given .
 adverse effect: Stevens - Johnson syndrome, ofloxacin; adverse effect: toxic epidermal necrolysis, ofloxacin
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 adverse effect: Stevens - Johnson syndrome, ofloxacin; adverse effect: toxic epidermal necrolysis, ofloxacin