Mawaddah M, Siregar ES. The Effect of Using A Digital Nutrition Application on The Knowledge and Attitudes of Mothers With Children Aged 1–5 Years Regarding Undernutrition . JN [Internet]. 2026 Jan. 28 [cited 2026 Jan. 30];10(1):2172-8. Available from: https://journal.universitaspahlawan.ac.id/index.php/ners/article/view/54441