Rojali Rojali, Indah Restiaty and Haerlintiniyah Huriyandah 2026. The Role of Home Physical Environment and Family Behavior in Preventing Pneumonia among Under-Five Children in a High-Density Urban Area of Jakarta, Indononesia. International Journal of Health Engineering and Technology. 4, 6 (Mar. 2026). DOI:https://doi.org/10.55227/ijhet.v4i6.615.