1. Department of Anesthesiology, Perioperative Medicine and Intensive Care Medicine; Paracelsus Medical University Salzburg; Salzburg; Austria
2. Institute of General Practice, Family Medicine and Preventive Medicine; Paracelsus Medical University; Salzburg; Austria
3. Department of Anesthesiology, Perioperative and Pain Medicine; Brigham and Women's Hospital; Boston; MA; USA
4. Department of Anesthesiology and Intensive Care Medicine; Hospital of Schwarzach; Salzburg; Austria