29423
We also recorded a significant correlation between M value increase and the decrease of vaspin , visfatin , and omentin - 1 obtained with vildagliptin + metformin .
 vildagliptin, metformin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 vildagliptin, metformin