title: Invited commentary.
authors.affiliation: Department of Cardiothoracic Surgery, The University of Tokyo, Graduate School of Medicine, Tokyo, JP 113-8655, Japan. nakajima-tho@h.u-tokyo.ac.jp
authors.forename: Jun
authors.initials: J
authors.lastname: Nakajima
mesh_terms: D001707:Biopsy, Needle / Q000379:methods / Q000706:statistics & numerical data*; D001999:Bronchoscopy / Q000379:methods / Q000706:statistics & numerical data*; D003937:Diagnosis, Differential; D019160:Endosonography / Q000706:statistics & numerical data*; D006801:Humans; D008477:Mediastinal Diseases / Q000175:diagnosis*; D015203:Reproducibility of Results