1. Health Psychology Group, Institute of Applied Health Sciences University of Aberdeen, Health Sciences Building Aberdeen UK
2. National Drug and Alcohol Research Centre University of New South Wales Sydney NSW Australia
3. Centre for Behaviour Change University College London London UK
4. Nuffield Department of Primary Care Health Sciences, Radcliffe Observatory Quarter, Oxford and United Kingdom and National Institute of Health Research, Oxford Biomedical Research Centre University of Oxford, Unipart House Business Centre Oxford UK
5. Department of Behavioural Science and Health University College London London UK
6. Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience Maastricht University Maastricht the Netherlands
7. Department of Clinical Psychology and Experimental Psychopathology University of Groningen Groningen the Netherlands
8. Scottish Dental Clinical Effectiveness Programme, NHS Education for Scotland, Dundee Dental Education Centre Dundee UK
9. Radboud University Medical Center Radboud Institute for Health Sciences Nijmegen the Netherlands