286,911 ANNUAL 9th Annual Meeting of the Deutsche Gesellschaft für Thorax-, Herz-und Gefasschirurgie. Abstracts of papers. Thursday, February 14th, 1980 to Saturday, February 16th, 1980 Bad Nauheim. Stuttgart 1980 Ihieme 4° s. 46. The Thoracic and Cardiovascular Surgeon Sonderh. vd. 28, spec. iss. nr 1.