MARTÍNEZ-SANDOVAL, Gloria et al. Salivary rheumatoid factor in primary and secondary Sjögren’s syndrome.. Journal of Oral Research, [S.l.], v. 8, n. 3, p. 196-200, aug. 2019. ISSN 0719-2479. Available at: <http://joralres.com/index.php/JOR/article/view/853>. Date accessed: 17 sep. 2019. doi: https://doi.org/10.17126/jor.v8i3.853.