Gor D, Lee TA, Schumock GT, Walton SM, Gerber BS, Nutescu EA, Touchette DR. Adherence and Persistence with DPP-4 Inhibitors Versus Pioglitazone in Type 2 Diabetes Patients with Chronic Kidney Disease: A Retrospective Claims Database Analysis. J Manag Care Spec Pharm. 2020 Jan; 26(1):67-75.