Mortality risk prediction in high-risk patients undergoing coronary artery bypass grafting: are traditional risk scores accurate? - Goncharov, Maxim; Mejia, Omar Asdrubal Vilca; Arthur, Camila Perez de Souza; Orlandi, Bianca Maria Maglia; Sousa, Alexandre; Oliveira, Marco Antonio Praca; Atik, Fernando Antibas; Segalote, Rodrigo Coelho; Dallan, Luís Alberto Oliveira; Jatene, Fábio Biscegli (PLOS ONE, 2021)