Angiographic evaluation of graft patency in midcab - Jatene, Fábio Biscegli; Pêgo-Fernandes, Paulo Manuel; Hueb, Alexandre Ciappina; Oliveira, Patrícia; Dallan, Luís; Fontes, Ricardo; Coelho, Rafael; Stolf, Noedir Antônio Groppo (Cardiothoracic Techniques & Technologies Current Trends in Thoracic Surgery, 2000)