title: Rheumatoid factor in children with lupus erythematosus. A serologic study.
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000276:immunology*; D002648:Child; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000276:immunology*; D008297:Male; D012217:Rheumatoid Factor / Q000032:analysis*
chemical_list: D012217:Rheumatoid Factor