1. Department of Computer and System Sciences, Stockholm University, Sweden and Department of Computer and System Sciences, Stockholm University, Sweden
2. UCL Interaction Centre, University College London, United Kingdom and UCL Interaction Centre, University College London, United Kingdom
3. Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Sweden and Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Sweden
4. KTH Royal Institute of Technology, Sweden and KTH Royal Institute of Technology, Sweden
5. School of Information and Communication Studies, University College Dublin, Ireland and School of Information and Communication Studies, University College Dublin, Ireland
6. School of Information & Communication Studies, University College Dublin, Ireland and School of Information & Communication Studies, University College Dublin, Ireland
7. Department of Computer and Systems Sciences, Stockholm University, Sweden and Department of Computer and Systems Sciences, Stockholm University, Sweden