E. Demirdöğen, “Serum Krebs von den Lungen-6: promising biomarker to differentiate CPFE from IPF: Serum KL-6: Discriminate CPFE from IPF”, Sarcoidosis Vasc Diffuse Lung Dis, vol. 39, no. 4, p. e2022035, Dec. 2022, doi: 10.36141/svdld.v39i4.11344.