Table 1 List of participating centers and ethics committee approvals

Medical University Vienna, Department of Internal Medicine II. Division of Cardiology

Gottfried Heinz, MD

Ethics Committee, Medical University Vienna

ECS 1805/2017

15 September 2017

Medical University Innsbruck, Division of Emergency Medicine and Intensive Care, Department Internal Medicine

Michael Joannidis, MD

State Hospital Wiener Neustadt, Department of Anesthesiology, Emergency Medicine and General Intensive Care

Helmut Trimmel, MD, MSc

University Hospital Greifswald, Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine

Sebastian Rehberg, MD

Ethics Committee, University Hospital Greifswald

FFV 06/17

15 February 2018

University Hospital Munich, Department of Anesthesiology

Christian Siebers, MD

University Hospital Hradec Králové, Department of Anesthesiology, Resuscitation and Intensive Medicine

Pavel Dostál, MD, PhD, MBA

Ethics Committee, University Hospital Hradec Králové

201801 I126M

07 November 2017

Masaryk Hospital, Department of Anesthesiology, Perioperative Medicine and Intensive Care

Vladimír Černý, MD, PhD, FCCM

University Hospital La Sapienza, Department of Anesthesiology and Intensive Care

Andrea Morelli, MD.

Ethics Committee, University Hospital La Sapienza

4846

08 February 2018

Azienda Ospedaliero Universitaria Pisana, Department of Anesthesiology and Resuscitation 5

Fabio Guarracino, MD

Azienda Ospedaliero Universitaria Pisana, Department of Anesthesiology and Resuscitation 6

Francesca Pratesi, MD

University School of Medicine Pisa, Department of Anesthesiology and Transplant Intensive Care Unit

Gianni Biancofiore, MD

University Hospital Modena, Department of Anesthesia and Intensive Care

Massimo Girardis, MD