1. Iwaszkiewicz C, Puszczewicz M, Białkowska-Puszczewicz G (2015) Diagnostic value of the anti-Sa antibody compared with the anti-cyclic citrullinated peptide antibody in rheumatoid arthritis. Int J Rheum Dis 18(1):46–51
2. Hou YF, Sun GZ, Sun HS, Pan WP, Liu WB, Zhang CQ (2012) Diagnostic value of anti-Sa and anticitrullinated protein antibodies in rheumatoid arthritis. J Rheumatol 39(8):1506–1508
3. Li H, Li X, Gan X (2000) Specific antibodies for the early diagnosis of rheumatoid arthritis. Zhonghua Yi Xue Za Zhi 80(1):20–24
4. Chen H, Yao ZJ, Tang FL (2006) Study of the proteins associated with Sa antigen. Natl Med J China 86(27):1896–1900
5. López-Longo FJ, Rodríguez-Mahou M, Sánchez-Ramón S, Estecha A, Balsera M, Plaza R et al (2006) Anti-cyclic citrullinated peptide versus anti-Sa antibodies in diagnosis of rheumatoid arthritis in an outpatient clinic for connective tissue disease and spondyloarthritis. J Rheumatol 33(8):1476–1481