title: Immunodeficiency in chronic pediatric respiratory illness.
mesh_terms: D001991:Bronchitis / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood / Q000145:classification / Q000627:therapeutic use; D007153:Immunologic Deficiency Syndromes / Q000150:complications* / Q000188:drug therapy; D007223:Infant; D007231:Infant, Newborn; D008171:Lung Diseases / Q000150:complications* / Q000276:immunology
chemical_list: D007074:Immunoglobulin G