Wells, Athol U., Ulrich Costabel, Venerino Poletti, Bruno Crestani, Jim Egan, George Margaritopoulos, and Katerina Antoniou. 2015. “Challenges in IPF Diagnosis, Current Management and Future Perspectives”. Sarcoidosis, Vasculitis and Diffuse Lung Disease 32 (1S):28-35. https://www.mattioli1885journals.com/index.php/sarcoidosis/article/view/4700.