[Preoperative evaluation of adult patients prior to elective, non-cardiac surgery: joint recommendations of German Society of Anesthesiology and Intensive Care Medicine, German Society of Surgery and German Society of Internal Medicine] - Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin; Deutsche Gesellschaft für Innere Medizin; Deutsche Gesellschaft für Chirurgie (Anaesthesist, 2010)