23404
RESULTS : By the end of the 2 - to 6 - year follow - up period , 14 . 3 % of the Met / TZD cohort , 23 . 6 % of the Met / SU cohort and 28 . 2 % of the SU / TZD cohort had insulin added to their regimen .
 Chemical: Met; Chemical: TZD; Chemical: Met; Chemical: TZD
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Met; Chemical: TZD; Chemical: Met; Chemical: TZD