Sumantri, Stevent, Siti Setiati, Dyah Purnamasari, and Esthika Dewiasty. “Relationship Between Metformin and Frailty Syndrome in Elderly People With Type 2 Diabetes”. Acta Medica Indonesiana 46, no. 3 (May 16, 2016). Accessed December 22, 2025. http://actamedindones.org/index.php/ijim/article/view/87.