Wijsenbeek, Marlies. “Challenges in the Classification of Fibrotic ILD: Patient Case 2”. Sarcoidosis, Vasculitis and Diffuse Lung Disease 32, no. 1S (August 3, 2015): 13–16. Accessed June 28, 2022. https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/4696.