Krasowska, D., Chodorowska, G., Koziol-Montewka, M., Ksiazek, A., & Buraczynska, M. (2005). The -308 promoter polymorphism in the tumour necrosis factor gene in patients with lichen planus. Acta Dermato-Venereologica, 85(5), 400–403. https://doi.org/10.1080/00015550510037053