SUSANTO, Hendri et al. Serum vitamin B12 associated with vitamin D/25(OH)D in women with recurrent aphthous stomatitis.. Journal of Oral Research, [S.l.], v. 9, n. 1, p. 21-28, feb. 2020. ISSN 0719-2479. Available at: <http://joralres.com/index.php/JOR/article/view/998>. Date accessed: 09 apr. 2020. doi: https://doi.org/10.17126/10.17126/joralres..