Bendstrup, Elisabeth, Toby M. Maher, Effrosyni D. Manali, and Marlies Wijsenbeek. 2015. “Challenges in the Classification of Fibrotic ILD”. Sarcoidosis Vasculitis and Diffuse Lung Disease 32 (1S), 4-9. https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/4694.