1 Mechanical Circulatory Support Program, Cardiac Surgery Unit, Department of Medicine and Surgery, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy; Cardiac Surgery Unit, Cardio-thoracic-vascular Department, San Gerardo Hospital Monza, Italy. Electronic address: francesco_formica@fastwebnet.it.
2 Cardiac Surgery Unit, Cardio-thoracic-vascular Department, San Gerardo Hospital Monza, Italy.
3 Department of Anaesthesia and Intensive Care Medicine, San Gerardo Hospital, Monza, Italy.