1. Department of Health Technologies, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia
2. Department of Business Administration, School of Business and Governance, Tallinn University of Technology, Tallinn, Estonia
3. Department of Public Health, Institute of Family Medicine and Public Health, Faculty of Medicine, University of Tartu, Tartu, Estonia
4. Thomas Johann Seebeck Department of Electronics, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia