Representativeness of nodal sampling with endobronchial ultrasonography in non-small-cell lung cancer staging. - Sanz-Santos J; Andreo F; Castellà E; Llatjós M; de Castro PL; Astudillo J; García-Luján R; Serra P; Monsó E; Sanz-Santos, J; Andreo, F; Castellà, E; et al. (Ultrasound in Medicine & Biology, 2012)