Affiliation: | 1. Division of Cardiothoracic Surgery, IRCCS Policlinico San Matteo and Pavia University School of Medicine, Pavia, Italy;2. Service of Biometrics and Statistics, IRCCS Policlinico San Matteo, Pavia, Italy;3. Division of Radiology, IRCCS Policlinico San Matteo, Pavia, Italy |