Kusumo, M. P., and W. Kusumawati. “Barriers to Understanding Health Education in Patients With Diabetes Mellitus (DM) in Yogyakarta: Qualitative Study”. Unnes Journal of Public Health, Vol. 11, no. 1, Jan. 2022, pp. 14-22, doi:10.15294/ujph.v11i1.43917.