1. Department of Cardiothoracic Anaesthesiology The Heart Centre Rigshospitalet Copenhagen University Hospital Copenhagen Denmark
2. Department of Cardiothoracic Surgery The Heart Centre Rigshospitalet Copenhagen University Hospital Copenhagen Denmark
3. National Institute of Public Health University of Southern Denmark Copenhagen Denmark
4. Departments of Cardiothoracic Anaesthesia Intensive Care and Cardiovascular Perfusion IRCCS Policlinico San Donato San Donato Milanese Milan Italy