Baughman, Robert P., and Elyse E Lower. “Features of Sarcoidosis Associated With Chronic Disease”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases, vol. 31, no. 4, Jan. 2015, pp. 275-81, https://mattioli1885journals.com/index.php/sarcoidosis/article/view/3441.