From the Department of Surgical, Oncological and Oral Science (Di.Chir.On.S.), University of Palermo (MI, AG, AC), Department of Anaesthesia, Intensive Care and Emergency, Policlinico Paolo Giaccone, Palermo (MI, AG, AC), Division of Anaesthesia and Intensive Care, Department of Human Pathology of the Adult and Evolutive Age ‘Gaetano Barresi’, University of Messina, Policlinico ‘G. Martino’, Messina, Italy (AN), Anesthesiology and Intensive Care, Anesthesia and Critical Care Department B, Saint Eloi Teaching Hospital, PhyMedExp, University of Montpellier, INSERM U1046, 1, Montpellier Cedex 5, Montpellier, France (IL), Institute for Translational Medicine and Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA (AC), Outcomes Research Consortium, Cleveland, OH, USA (AC), Department of Paediatric and Obstetric Anaesthesia, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark (AA), Institute of Clinical Medicine, University of Copenhagen (AA), Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, University Hospital Würzburg, Würzburg, Germany (PK), Consorcio Hospital General Universitario de Valencia, Valencia. Methodology research Department, Universidad Europea de Valencia, Spain (CSRG), Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Hospital, Homi Bhabha National Institute, Mumbai, India (SNM), Department of Intensive Care, Amsterdam University Medical Centers, Location ’AMC’, Amsterdam, The Netherlands (MJS), Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand (MJS), Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, Oxford University, Oxford, UK (MJS), Department of Anaesthesiology, Critical Care and Pain Medicine, Policlinico Umberto I Teaching Hospital, Sapienza University of Rome, Rome (FB), Division of Anaesthesia, Analgesia, and Intensive Care, Department of Medicine and surgery. University of Perugia, Italy (EDR) and General Intensive Care Unit of the Shaare Zedek Medical Centre and the Hebrew University Faculty of Medicine, Jerusalem, Israel (SE)

Correspondence to Professor Andrea Cortegiani, MD, Department of Surgical, Oncological and Oral Science (Di.Chir.On.S.), University of Palermo, Italy. Department of Anaesthesia, Intensive Care and Emergency, Policlinico Paolo Giaccone via del Vespro 129, 90127 Palermo, Italy. Tel: +39 916552751; e-mail: [email protected]

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Website (www.ejanaesthesiology.com).