Stanifer BP, Dragnev KH, Delong PA, Tilluckdharry LO, Rigas JR, McGowan AK, Kopar P, Nugent WC, Erkmen CP. EBUS Results on Patients with Previous Malignancy and New Mediastinal Adenopathy, in Chest. Honolulu, Hawaii: American College of Chest Physicians ; 2011.