Dee, T.M.T. and Siti Sakinah 2024. Effect of Theory-Based Education on Diabetic Ulcer Prevention Among Diabetes Mellitus Patients. Jurnal Ners dan Kebidanan (Journal of Ners and Midwifery). 11, 1 (May 2024), 031–038. DOI:https://doi.org/10.26699/jnk.v11i1.ART.p031-038.