286,826 ABSTRACTS Abstracts of papers presented at the 8th Annual Meeting of the Deutsche Gesellshaft fur Thorax-, Herz - und Gefasschirurgie German Society for Thoracic and Cardiovascular Surgery.Thursday, February 15 th, 1979 to Saturday, February 17th, 1979 Bad Nauhein. Stuttgart 1979 Georg Thieme Publ.4°s. 44 The Thoracic and Cardiovascular Surgeon, spec, iss. nr 1