1. Research Unit for ORL–Head & Neck Surgery and Audiology, Odense University Hospital & University of Southern Denmark, Odense, Denmark
2. Work, Environment and Cancer, Danish Cancer Institute, Copenhagen, Denmark
3. The Maersk Mc-Kinney Moller Institute, University of Southern Denmark, Odense, Denmark
4. Department of Public Health, Research Unit for General Practice and Section of General Practice, University of Copenhagen, Copenhagen, Denmark
5. Research Unit of General Practice, Department of Public Health, University of Southern Denmark, Odense, Denmark
6. Department of Neurology, Slagelse Hospital, Slagelse, Denmark
7. Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
8. Department of Economics, University of Southern Denmark, Denmark
9. Department of Environmental Science, Aarhus University, Roskilde, Denmark
10. Department of Natural Science and Environment, Roskilde University, Roskilde, Denmark
11. Brain Research–Inter-Disciplinary Guided Excellence, Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
12. Odense Patient data Explorative Network, Odense University Hospital, Odense, Denmark