R. Lumbantobing and , Kurniyanto, “Comparison of the Effectiveness of Single Oral Antidiabetic Drugs with Combination Antidiabetic Drugs in Lowering Blood Sugar in Type 2 Diabetes Mellitus Patients at UKI General Hospital in 2014-2017”, J. Drug Delivery Ther., vol. 12, no. 1-S, pp. 118–122, Feb. 2022, doi: 10.22270/jddt.v12i1-S.5219.