1 Department of Anesthesia, Intensive Care and Prehospital Emergency, Maggiore Hospital Carlo Alberto Pizzardi, Italy; European Resuscitation Council, Niel, Belgium. Electronic address: federico.semeraro@erc.edu.
2 PULS - Austrian Cardiac Arrest Awareness Association, 1090 Vienna, Austria; Emergency Medical Service Vienna Austria, and Department of Emergency Medicine, Medical University of Vienna, Austria.
3 Department of Anaesthesia and Intensive Care, Infermi Hospital, Romagna Local Health Authority, Rimini, Italy.
4 Critical Care, and Pain Medicine Division, Department of Medicine and Surgery Anesthesiology, University of Parma, Parma, Italy.
5 Department of Emergency Medicine, Antwerp University Hospital and University of Antwerp, Belgium.