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 Department of Natural Science and Environment, Roskilde University, Roskilde, Denmark.
4 Brain Research-Inter-Disciplinary Guided Excellence, Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark.
5 Odense Patient Data Explorative Network, Odense University Hospital, Odense, Denmark.