Clinical features and outcomes in combined pulmonary fibrosis and emphysema in idiopathic pulmonary fibrosis.
Ryerson CJ, Hartman T, Elicker BM, Ley B, Lee JS, Abbritti M, Jones KD, King TE, Ryu J, Collard HR. Clinical features and outcomes in combined pulmonary fibrosis and emphysema in idiopathic pulmonary fibrosis. Chest. 2013 Jul; 144(1):234-240.