1 Cardiac Surgery Clinic, Department of Medicine and Surgery, University of Milano-Bicocca, Via Cadore, 48 20900 Monza, Italy. Electronic address: francesco_formica@fastwebnet.it.
2 Cardiac Surgery Clinic, Department of Medicine and Surgery, University of Milano-Bicocca, Via Cadore, 48 20900 Monza, Italy.
3 Postoperative Intensive Care Medicine, ASST San Gerardo, Monza, Italy.