1Ergonomic Technology Center, University of Connecticut Health Center, Farmington, CT
2Institute for Microstructural Sciences, National Research Council, Ottawa, Ontario, Canada
3Department of Otorhinolaryngology, Tampere University Hospital, Tampere, Finland
4Finnish Institute of Occupational Health, Helsinki, Finland
5Department of Physical Medicine and Rehabilitation, North Karelia Central Hospital, Joensuu, Finland
6Department of Biomedical Engineering and Informatics, University Hospital, Umeå, Sweden
7Department of Occupational and Environmental Medicine, Sundsvall Hospital, Sundsvall, Sweden
8Department of Psychology, Umeå University, Umeå, Sweden