Melly Damayanti et al. 2025. WORK EFFICIENCY OF INTEGRATED SERVICE POST CADRES IN MONITORING THE GROWTH AND DEVELOPMENT OF CHILDREN UNDER FIVE THROUGH THE USE OF THE E-POSYANDU KESEHATAN (EPOK) APPLICATION. International Journal of Social Science. 5, 2 (Aug. 2025), 191–198. DOI:https://doi.org/10.53625/ijss.v5i2.10999.