1. a Institute for Environmental Research and Sustainable Development, National Observatory of Athens , Athens , Greece
2. b National Kapodistrian University of Athens Medical School , Athens , Greece
3. c Department of Physical Sciences , University of Helsinki , Helsinki , Finland
4. d Physics Departments , Finnish Institute of Occupational Health , Helsinki , Finland
5. e Unit of Environmental Epidemiology , National Public Health Institute , Kuopio , Finland
6. f Unit of Environmental Epidemiology , National Public Health Institute and School of Public Health and Clinical Nutrition, University of Kuopio , Kuopio , Finland
7. g Division of Environmental Health and Risk Management , University of Birmingham , Birmingham , United Kingdom
8. h Department of Environmental and Occupational Medicine , Liberty Safe Work Research Centre, University of Aberdeen , Aberdeen , United Kingdom
9. i Energy Research Center of Netherlands , Petten , The Netherlands
10. j Institute for Risk , Utrecht , The Netherlands