title: [Seronegative spondyloarthropathies].
authors.forename: N
authors.initials: N
authors.lastname: Tsuchiya
mesh_terms: D001172:Arthritis, Rheumatoid / Q000276:immunology; D006801:Humans; D012217:Rheumatoid Factor / Q000032:analysis; D013166:Spondylitis / Q000276:immunology
chemical_list: D012217:Rheumatoid Factor