title: Reply.
authors.affiliation: Division of Thoracic Surgery, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, Austria 1090.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schweiger
authors.affiliation: Division of Thoracic Surgery, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, Austria 1090.
authors.forename: Walter
authors.initials: W
authors.lastname: Klepetko
authors.affiliation: Division of Thoracic Surgery, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, Austria 1090. Electronic address: konrad.hoetzenecker@meduniwien.ac.at.
authors.forename: Konrad
authors.initials: K
authors.lastname: Hoetzenecker