Published on in Vol 19, No 12 (2017): December
1 Martti Ahtisaari Institute, Oulu Business School, University of Oulu, Oulu, Finland
2 VTT Technical Research Centre of Finland, Oulu, Finland
3 Department of Marketing, Oulu Business School, University of Oulu, Oulu, Finland
4 Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland