Lutpiatina, Leka, Ratih Dewi Dwiyanti, and Aima Insana. 2026. “The Role of Biological and Environmental Factors in Infant Pneumonia: Findings from the 2023 Indonesian Health Survey”. Tropical Health and Medical Research 8 (1):37-45. https://doi.org/10.35916/thmr.v8i1.150.