Apriandini, L. et al.trans. 2026. Breakfast Habits, Protein and Iron Consumption Levels as Related Factorswith Nutritional Status of 8th and 9th Grade Students of Maarif SMP Jakarta in 2023. World Health Digital Journal. 2, 4 (Sep. 2026), 295–300. DOI:https://doi.org/10.31004/wolgitj.v2i4.29.