title: Invited commentary.
authors.affiliation: Department of Thoracic Surgery, Thoraxklinik, The University of Heidelberg, Amalienstrasse 5, Heidelberg, Germany D-69126. hans.hoffmann@urz.uni-heidelberg.de
authors.forename: Hans
authors.initials: H
authors.lastname: Hoffmann
mesh_terms: D001943:Breast Neoplasms / Q000401:mortality*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality*; D059146:Metastasectomy