Wang, Ko Pen Endobronchial ultrasound and esophageal ultrasound: just because we can, does not necessarily mean we should. [electronic resource] - Chest Jul 2011 - 271-272 p. digital Publication Type: Letter; Comment ISSN: 1931-3543 Standard No.: 10.1378/chest.11-0171 doi Subjects--Topical Terms: Biopsy--methodsBronchi--diagnostic imagingBronchoscopy--methodsDiagnosis, DifferentialEndosonographyEsophagus--diagnostic imagingHumansLung Neoplasms--diagnosisNeoplasm Staging--methodsReproducibility of Results