Abbreviations: ADA = American Diabetes Association, BMI = body mass index, DKA = Diabetic ketoacidosis, GAD-Ab = glutamic acid decarboxylase antibodies, GDR = glucose disposal ratio, HbA1c = glycosylated hemoglobin A1c, IA-2 = insulinoma associated antigen 2, IAA = insulin autoantibody, ICA = islet cell antibody, KPDM = ketosis-prone diabetes mellitus, GTT = oral glucose tolerance test, WBC = white blood cell.