1. Digital Epidemiology Lab, Global Health Institute, School of Life Sciences, EPFL, Geneva, Switzerland / School of Computer and Communication Sciences, EPFL, Switzerland
2. Institute of Social and Preventive Medicine, University of Bern, Switzerland; Interfaculty Platform for Data and Computational Science (INPUT), University of Bern, Switzerland
3. Institute of Social and Preventive Medicine, University of Bern, Switzerland; Division of infectious diseases, Federal Office of Public Health, Liebefeld, Switzerland
4. School of Computer and Communication Sciences, EPFL, Switzerland
5. Federal Office of Information Technology, Systems and Telecommunication, Bern, Switzerland
6. Department of Computer Science, ETH Zurich, Switzerland
7. Federal Office of Public Health, Liebefeld, Switzerland
8. Institute of Social and Preventive Medicine, University of Bern, Switzerland
9. Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Switzerland
10. Department of Health Sciences and Technology, Health Ethics and Policy Laboratory, ETH Zurich, Switzerland
11. Digital and Mobile Health Group, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Switzerland