Ungprasert, Patompong, Cytnthia S Crowson, and Eric L Matteson. “Risk of Gastrointestinal Events Among Patients With Sarcoidosis: A Population-Based Study 1976-2013”. Sarcoidosis Vasculitis and Diffuse Lung Disease 35, no. 3 (October 15, 2018): 239-244. Accessed July 10, 2020. https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/6561.