19th annual meeting of the German Society for Thoracic and Cardiovascular Surgery. February 22, 1990, to February 24, 1990, Bad Nauheim. Abstracts.
D003327:Coronary Disease / Q000601:surgery*; D006331:Heart Diseases / Q000601:surgery*; D006801:Humans; D008171:Lung Diseases / Q000601:surgery*