Sitagliptin
Medicine
Metformin
Placebo
Sitagliptin Phosphate
Rosiglitazone
Internal medicine
Adverse effect
Type 2 diabetes
Glycemic
Dipeptidyl peptidase-4 inhibitor
Randomized controlled trial
Diabetes mellitus
Gastroenterology
Endocrinology
Insulin
Alternative medicine
Pathology