1. Department of Anaesthesiology and Critical Care Medicine, Krankenhaus der Barmherzigen Schwestern, Ried im Innkreis, Austria
2. Department of Intensive Care Medicine, Inselspital, Bern, Switzerland
3. Institute of Informatics, Medical Statistics and Health Economics, Innsbruck Medical University, Innsbruck, Austria
4. Department of Anaesthesiology and Critical Care Medicine, Innsbruck Medical University, Innsbruck, Austria
5. Department of Internal Medicine, Community Hospital Hall, Hall in Tirol, Austria