Yudivaniel Zihono; Hany Yusmaini; Uswatun Hasanah; Erna Harfiani; Md Ikhsan Mokoagow; Dicky Budiman. Metformin Effectiveness in Reducing Mortality Among Covid-19 Patients With Type 2 Diabetes Mellitus at a Tertiary Hospital in Indonesia. FMI 2023, 59, 267-273.