1. Design and Environmental Analysis, Human Developments, Cornell University, Ithaca, New York 14853-4401
2. Institute of Social Medicine, University of Innsbruck, Sonnenburgstrasse 16, A-6020 Innsbruck, Austria
3. Institute for Research into Man-Environment-Relations, Department of Psychology, University of Oldenburg, D-26111 Oldenburg, Germany
4. Federal Environmental Agency, Institute for Water, Soil, and Air Hygiene, Germany
5. Institute of Hygiene and Social Medicine, Section Social Medicine and School of Public Health, University of Innsbruck, Sonnenburgstrasse 16, A-6020 Innsbruck, Austria