Effect of sitagliptin on post-prandial glucagon and GLP-1 levels in patients with type 1 diabetes: investigator-initiated, double-blind, randomized, placebo-controlled trial.
Garg SK, Moser EG, Bode BW, Klaff LJ, Hiatt WR, Beatson C, Snell-Bergeon JK. Effect of sitagliptin on post-prandial glucagon and GLP-1 levels in patients with type 1 diabetes: investigator-initiated, double-blind, randomized, placebo-controlled trial. Endocr Pract. 2013 Jan-Feb; 19(1):19-28.