Merrick DT, Gao D, Miller YE, Keith RL, Baron AE, Feser W, Kennedy TC, Blatchford PJ, Braudrick S, Hirsch FR, Heasley L, Bunn PA, Franklin WA. Persistence of Bronchial Dysplasia Is Associated with Development of Invasive Squamous Cell Carcinoma. Cancer Prev Res (Phila). 2016 Jan; 9(1):96-104.