RT Journal Article SR Electronic T1 N3 hilar sampling decision in the staging of mediastinal lung cancer JF ERJ Open Research JO erjor FD European Respiratory Society SP 00116-2021 DO 10.1183/23120541.00116-2021 VO 7 IS 3 A1 Jaume Bordas-Martinez A1 Jose Luis Vercher-Conejero A1 Guillermo Rodriguez-González A1 Noelia Cubero A1 Rosa M. Lopez-Lisbona A1 Marta Diez-Ferrer A1 Rachid Tazi A1 Antoni Rosell YR 2021 UL http://openres.ersjournals.com/content/7/3/00116-2021.abstract AB