1. Swiss Tropical and Public Health Institute, Basel, Switzerland
2. University of Basel, Basel, Switzerland
3. Center for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland
4. Empa, Laboratory for Acoustics/Noise Control, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
5. Institute of Clinical Chemistry, University Hospital Zürich, Zurich, Switzerland
6. Federal Office for the Environment, Bern, Switzerland