1. Institute of Intensive Care Medicine University Hospital Zurich Zurich Switzerland
2. Department of Cardiology University Heart Center, University Hospital Zurich Zurich Switzerland
3. Institute of Anaesthesiology University Hospital Zurich Zurich Switzerland
4. University of Zurich Zurich Switzerland
5. Emergency Department University Hospital Zurich Zurich Switzerland
6. National Poisons Information Centre, Tox Info Suisse Associated Institute of the University of Zurich Zurich Switzerland
7. Institute of Clinical Chemistry University Hospital Zurich Zurich Switzerland