Jarrot, Pierre André, et al. “Association of Sarcoidosis and Ulcerative Colitis: a Review of 20 Cases”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases, vol. 30, no. 3, Nov. 2013, pp. 212-6, https://mattioli1885journals.com/index.php/sarcoidosis/article/view/2892.