1 Unit of Anesthesia and Intensive Care, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy; Anesthesia and Intensive Care, Fondazione Policlinico San Matteo Hospital, IRCCS, Pavia, Italy. Electronic address: guido.tavazzi@unipv.it.
2 Leon H. Charney Division of Cardiovascular Medicine, New York University Langone Medical Center and Bellevue Hospital Center, New York, NY.
3 OLV Heart Centrum, Aslst, Belgium; Department of Critical Care, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, England.
4 Department of Surgical, Medical, Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy.