13117
The hearing impairment and tinnitus were gradually reduced after PTU withdrawal and corticosteroid and azathioprine treatment .
 adverse effect: hearing impairment, PTU; adverse effect: tinnitus, PTU
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: hearing impairment, PTU; adverse effect: tinnitus, PTU