1. The Jönköping Academy for Improvement of Health and Welfare, The School of Health and Welfare, Jönköping University, Jönköping, Sweden
2. Department of Materials Science and Applied Mathematics, Malmö University, Malmö, Sweden
3. The Jönköping Academy for Improvement of Health and Welfare, The School of Health and Welfare, Jönköping University, Jönköping, Sweden; Department of Industrial Economics and Management, Royal Institute of Technology, Stockholm, Sweden