From the Department of Anaesthesia and Intensive Care, Mater Dei Hospital, Malta (AMCP), the Department of Anaesthesia, Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, UK (NR), Department of Anesthesiology and Intensive Care Medicine (CCM/CVK), Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Germany (IA), the Department of Anaesthesia and Intensive Care Medicine, Baerum Hospital, Sandvika, Norway (JMO), the Department of Anaesthesiology, AKROMION Special Hospital for Orthopaedic Surgery, Ljudevita Gaja 2,49217 Krapinske Toplice, Croatia (KO), the 6 Department of Anaesthesia, General Hospital Nikaia, Piraeus, Greece (PK), the Department of Anaesthesia and Reanimation. Hospital Universitario La Paz, Madrid, Spain (EG), the Medical Simulation Centre, University Medical Centre Ljubljana, Slovenia (VNJ), the Department of Anaesthesiology and Reanimatology, Riga; Riga Stradins University, Latvia (OS), the Department of Anaesthesiology and Critical Care, Policlinico Umberto I Hospital, La Sapienza University of Rome, Rome, Italy (FB), the Department of Anaesthesiology and Intensive Care, Grigore T. Popa University of Medicine and Pharmacy, Iasi, Romania (IG)

Correspondence to Federico Bilotta, the Department of Anaesthesiology and Critical Care, Policlinico Umberto I Hospital, La Sapienza University of Rome, viale del Policlinico, 155, Rome, 00161, Italy. E-mail: [email protected]

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