1. Department of Intensive Care Medicine and 3CARE Medical Faculty RWTH Aachen Aachen Germany
2. Department of Anesthesiology and Intensive Care Medicine Research Institute of Circulation Pathology E. Meshalkin National Medical Research Centre Novosibirsk Russia
3. Department of Anesthesiology and Intensive Care Medicine National Pirogov Medical Centre Moscow Russia
4. Division of Cardiac Anesthesia & Critical Care Medicine University of Ottawa Heart Institute Ottawa Ontario Canada
5. Algora: Statistics and Clinical Research Haar Germany
6. Clinical Evaluation Research Unit Kingston General Hospital Kingston Ontario Canada