15715
The effect of add - on therapy with sitagliptin on glycemic control was prospectively investigated in patients with type 2 diabetes mellitus ( T2DM ) receiving insulin alone or insulin combined with oral antidiabetic drugs .
 Chemical: sitagliptin
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: sitagliptin