1. Department of Anesthesiology and Critical Care Medicine; Medical University of Innsbruck; Innsbruck Austria
2. Department of Anesthesiology and Critical Care Medicine; Berufsgenossenschaftliche Unfallklinik; Murnau am Staffelsee Germany
3. Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine; Medical Campus Bodensee; Friedrichshafen Germany
4. Department of Anaesthesiology and Intensive Care Medicine; Hospitaller Brothers Hospital; Paracelsus Medical University; Salzburg Austria
5. Barts Heart Centre William Harvey Research Institute; Barts and The London School of Medicine and Dentistry; Queen Mary University of London; London England