Laczniak, Andrew N, Nathan A Gross, Laurence J Fuortes, and R. William Field. “Unsuspected Exposure to Beryllium: Potential Implications for Sarcoidosis Diagnoses”. Sarcoidosis Vasculitis and Diffuse Lung Disease 31, no. 2 (July 21, 2014): 163-169. Accessed February 28, 2021. https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/2846.