There is no significant difference in the operative risk between octogenarians compared with patients younger than 60 years in cardiac surgery. - Mächler, H.; Salaymeh, L.; Zirngast, B.; Anelli-Monti, M.; Oberwalder, P.; Yates, A.; Knez, I.; Huber, St.; Streinu, Ch.; Ovcina, I.; Malliga, D.; Keeling, I.; et al. (European Surgery: ACA Acta Chirurgica Austriaca, 2011)