C. J. Ryerson, Hartman, T., Elicker, B. M., Ley, B., Lee, J. S., Abbritti, M., Jones, K. D., King, T. E., Ryu, J., and Collard, H. R.,
“Clinical features and outcomes in combined pulmonary fibrosis and emphysema in idiopathic pulmonary fibrosis.”,
Chest, vol. 144, no. 1, pp. 234-40, 2013.
