Ali, Aseel J, et al. “Concomitant Using of Topical Carrageenan-Kappa and Oral Vitamin D Against 7, 12-dimethylbenz[a]anthracene Induced-Oral Cancer in Rats: A Synergism or an Antagonism Effects”. Brazilian Dental Science, vol. 23, no. 3, June 2020, p. 7 p, doi:10.14295/bds.2020.v23i3.1926.