2. Type 2 diabetes for ≥ 3 months treated with metformin (≥ 1000 mg/day) alone or metformin (≥ 1000 mg/day) with glimepiride, glyburide, glipizide, saxagliptin, sitagliptin, linagliptin, alogliptin, repaglinide, nateglinide, pioglitazone, exenatide, liraglutide, or a total daily dose of insulin ≤ 0.4 units/kg/day prior to admission.