1. University of Edinburgh; Allergy & Respiratory Research Group, Centre for Population Health Sciences; Doorway 1 Teviot Place Edinburgh Scotland UK EH8 9AG
2. Centre for Population Health Sciences: GP Section, The University of Edinburgh; Allergy & Respiratory Research Group; 20 West Richmond Street Edinburgh UK EH8 9DX
3. Scottish Dental Clinical Effectiveness Programme, NHS Education for Scotland; The University of Dundee, Dental Health Services & Research Unit; Frankland Building, Small's Wynd Dundee UK DD1 4HN
4. University of Edinburgh; Centre for Population Health Sciences; 20 West Richmond St Edinburgh UK EH8 9DX
5. 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
6. University of Ljubljana; Department of Family Medicine, Faculty of Medicine; Ljubljana Slovenia
7. The University of Edinburgh; Centre for Population Health Sciences; Medical School Doorway 3, Teviot Place Edinburgh UK EH8 9AG