Lailil Fatkuriyah et al. 2024. Usability Study of Dehy Pro (Dehydration Prevention) Application to Prevent Diarrhea Dehydration among Children in Jember. PROFESSIONAL HEALTH JOURNAL. 6, 1 (Jul. 2024), 177–187. DOI:https://doi.org/10.54832/phj.v6i1.776.