¹Dept. of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Sweden

²Dept. of Forest Biomaterials & Technology, Swedish University of Agricultural Sciences, Umeå, Sweden

³Dept. of Psychology, Umeå University, Umeå, Sweden

⁴Dept. of Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden