1. Department of Psychology, School of Sustainable Development of Society and Technology; Mälardalen University; Eskilstuna/Västerås; Sweden
2. Nottinghamshire Healthcare NHS Trust; Nottingham; UK
3. Department of Psychology; University of Gothenburg; Gothenburg; Sweden
4. Department of Behavioural and Community Dentistry, Institute of Odontology, The Sahlgrenska Academy; University of Gothenburg; Gothenburg; Sweden