Yeimo, Yulianda, Isna Qadrijati, and Bhisma Murti. 2018. “Environmental Factors Associated With Pneumonia in Children Under-Five in Nduga District, Papua”. Journal of Epidemiology and Public Health 3 (3):307-11. https://jepublichealth.com/index.php/jepublichealth/article/view/85.