Parveen, R. et al. 2025. Primary Immunodeficiency Disorders in Children Suffering from Persistent Pneumonia: Experience from A Tertiary Care Hospital. Dhaka Shishu (Children) Hospital Journal. 39, 2 (Jul. 2025), 75–81. DOI:https://doi.org/10.3329/dshj.v39i2.82854.