Riley CM, Wenzel SE, Castro M, Erzurum SC, Chung KF, Fitzpatrick AM, Gaston B, Israel E, Moore WC, Bleecker ER, Calhoun WJ, Jarjour NN, Busse WW, Peters SP, Teague WG, Sorkness R, Holguin F. Clinical Implications of Having Reduced Mid Forced Expiratory Flow Rates (FEF25-75), Independently of FEV1, in Adult Patients with Asthma. PLoS One. 2015; 10(12):e0145476.