1. The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway / Lovisenberg Diaconal University College, Oslo, Norway
2. Department of Nursing and Health Promotion, Oslo Metropolitan University, Oslo, Norway
3. The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway
4. The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway / Faculty of Health Sciences and Social Care, Molde University College, Molde, Norway
5. The Norwegian National Centre for Ageing and Health, Vestfold Hospital Trust, Tønsberg, Norway / VID Specialized University, Oslo, Norway