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DeFronzo, Ralph A., John B. Buse, Terri Kim, Colleen Burns, Sharon Skare, Alain Baron, a Mark Fineman. "Once-daily Delayed-release Metformin Lowers Plasma Glucose and Enhances Fasting and Postprandial GLP-1 and PYY: Results From Two Randomised Trials." Diabetologia 2016.

DeFronzo, Ralph A., et al. "Once-daily Delayed-release Metformin Lowers Plasma Glucose and Enhances Fasting and Postprandial GLP-1 and PYY: Results From Two Randomised Trials." Diabetologia 2016.