[Relationship between air pollution and prevalence of upper respiratory tract disorders and immunity among children].
D000397:Air Pollution / Q000009:adverse effects*; D002648:Child; D006801:Humans; D007109:Immunity; D007136:Immunoglobulins / Q000032:analysis; D012141:Respiratory Tract Infections / Q000209:etiology*
D007136:Immunoglobulins