1. Institute
of Anesthesiology, University Hospital Zurich, CH-8091 Zurich, Switzerland
2. Institute of Physiology, Zurich Center for Integrative
Human Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
3. Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zurich, CH-8093 Zurich, Switzerland
4. Institute
of General Practice and Health Services Research, University of Zurich, CH-8091 Zürich, Switzerland