title: Invited commentary.
authors.affiliation: Department of Cardiovascular Surgery, University Hospital of Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str 7, Kiel, D-24105 Germany. lutter@kielheart.uni-kiel.de
authors.forename: Georg
authors.initials: G
authors.lastname: Lutter
mesh_terms: D006348:Cardiac Surgical Procedures / Q000379:methods*; D004724:Endoscopy; D005336:Fiber Optic Technology; D006331:Heart Diseases / Q000601:surgery*