title: Arthritis in childhood.
mesh_terms: D001171:Arthritis, Juvenile / Q000276:immunology*; D002648:Child; D006680:HLA Antigens / Q000032:analysis*; D006801:Humans; D012217:Rheumatoid Factor / Q000032:analysis
chemical_list: D006680:HLA Antigens; D012217:Rheumatoid Factor