1. School of Health Sciences, Örebro University, Örebro, Sweden
2. School of Successful Ageing, Örebro University, Örebro, Sweden
3. Swedish Institute for Disability Research, Örebro University, Örebro, Sweden
4. The Swedish National Resource Centre for Deafblindness, Lund Sweden
5. Audiological Research Centre, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
6. University Health Care Research Centre, Faculty of Medicine and Health, Örebro University, Örebro, Sweden