title: Serum immunoglobulin levels and the frequency of previous hospital admissions of children with bronchial asthma.
mesh_terms: D000293:Adolescent; D001249:Asthma / Q000276:immunology*; D002648:Child; D002673:Child, Hospitalized; D002675:Child, Preschool; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis*; D010343:Patient Admission; D012008:Recurrence; D012141:Respiratory Tract Infections / Q000276:immunology
chemical_list: D007136:Immunoglobulins