Ungprasert, Patompong, Cytnthia S Crowson, Eva M Carmona, and Eric L Matteson. “Outcome of Pulmonary Sarcoidosis: A Population-Based Study 1976-2013”. Sarcoidosis vasculitis and diffuse lung disease 35, no. 2 (July 1, 2018): 123-128. Accessed December 15, 2019. https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/6356.