“Analysis of Determinants of PCV Immunization Uptake and Pneumonia Incidence Among Under-Five Children in the Catchment Area of Sei Rampah Community Health Center”. JURNAL KESMAS DAN GIZI (JKG) 8, no. 2 (April 30, 2026): 1349–1356. Accessed April 26, 2026. https://ejournal.medistra.ac.id/index.php/JKG/article/view/3518.