1. School of Public Health, Imperial College London; Global eHealth Unit, Department of Primary Care and Public Health; London UK
2. Radboud University; Nijmegen Netherlands
3. Imperial College; Global eHealth Unit; London UK
4. Imperial College London; Global eHealth Unit, Department of Primary Care and Public Health, School of Public Health; Reynolds Building St Dunstans Road London UK W6 8RP
5. University of Ljubljana; Department of Family Medicine, Faculty of Medicine; Ljubljana Slovenia