1. Institute for Risk Assessment Sciences; Utrecht University; Utrecht The Netherlands
2. Institute for Social and Preventive Medicine; Bern Switzerland
3. IT'IS Foundation; Zurich; Switzerland
4. Department of Environmental Health; Public Health Service of Amsterdam (GGD); Amsterdam The Netherlands
5. Julius Centre for Public Health Sciences and Primary Care; University Medical Centre; Utrecht The Netherlands
6. Department of General Practice and Elderly Care Medicine; EMGO Institute for Health and Care Research; VU University Medical Center; Amsterdam The Netherlands