1. Sidekick Health Digital Therapeutics, Kópavogur, Iceland
2. Faculty of Medicine, University of Iceland and Children’s Medical Centre, Landspitali University Hospital, Reykjavik, Iceland
3. Center of Public Health Sciences, Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
4. Department of Psychology, University of Iceland, Reykjavik, Iceland
5. Faculty of Health Promotion, Sport and Leisure Studies, School of Education, University of Iceland, Reykjavik, Iceland
6. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
7. Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
8. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
9. Clinical Effectiveness Group, Institute of Health and Society, University of Oslo, Oslo, Norway