Soegijanto, Soegeng, Dwi Soejono, and Parwati B. 2018. “Early Protection Against Measles Infection in Children Immunized With DPT-Measles Vaccine at the Age of 4 Months”. Paediatrica Indonesiana 33 (3-4), 52-8. https://doi.org/10.14238/pi33.3-4.1993.52-8.