1. Higher Vocational Education Helsingborg; Helsingborg Sweden
2. Faculty of Health Sciences; Kristianstad University; Kristianstad Sweden
3. Department of Natural Science and Biomedicine; Centre for Oral Health; School of Health and Welfare; Jönköping University; Jönköping Sweden
4. Aging Research Network - Jönköping (ARN-J); Jönköping Sweden