Yosipovitch, G., Kaplan, I., Calderon, S., David, M., Chan, Y. H., & Weinberger, A. (2001). Distribution of mucosal pH on the bucca, tongue, lips and palate. A study in healthy volunteers and patients with lichen planus, Behçet’s disease and burning mouth syndrome. Acta Dermato-Venereologica, 81(3), 178–180. https://doi.org/10.1080/000155501750376258