1. Geriatric Medicine, Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
2. Physiotherapy, Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
3. Orthopaedics, Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden
4. Department of Nursing, Umeå University, Umeå, Sweden