Abdul Gultom (2018) “EMPOWERING QUALITY OF LIFE: A SELF-EFFICACY DEVELOPMENT MODEL FOR DIABETES MELLITUS PATIENTS AT DARUSSALAM PUSKESMAS, MEDAN, INDONESIA”, International Journal of Medical Science and Dental Health, 4(07), pp. 01–05. Available at: https://www.ijmsdh.org/index.php/ijmsdh/article/view/114 (Accessed: 8 June 2026).