Amalia Puspita Dewi et al. 2025. Relationship Between Micronutrient Ferritin, Vitamin D, And Calcium With The Severity Of Diabetic Foot Based On The Wagner-Meggitt Criteria At Adam Malik Hospital. Journal of Endocrinology, Tropical Medicine, and Infectious Disease (JETROMI). 7, 2 (May 2025), 55–64.