T. Okamoto, T. Tsutsui, K. Suhara, H. Furusawa, Y. Miyazaki, and N. Inase, “Seasonal variation of serum KL-6 and SP-D levels in bird-related hypersensitivity pneumonitis”, Sarcoidosis Vasc Diffuse Lung Dis, vol. 31, no. 4, pp. 364–367, Jan. 2015, Accessed: Jul. 18, 2024. [Online]. Available: https://mattioli1885journals.com/index.php/sarcoidosis/article/view/3525