title: Letter: Pleural effusion in HBsAG-positive hepatitis.
mesh_terms: D002648:Child; D006509:Hepatitis B / Q000150:complications* / Q000276:immunology; D006511:Hepatitis B Antigens / Q000032:analysis; D006801:Humans; D008297:Male; D010996:Pleural Effusion / Q000209:etiology*
chemical_list: D006511:Hepatitis B Antigens