1. Research Department, PSYTREC, Bilthoven, The Netherlands
2. Behavioural Science Institute (BSI), Radboud University, Nijmegen, The Netherlands
3. Phrenos Center of Expertise for severe mental illness, Utrecht, The Netherlands
4. Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
5. Institute of Health and Society, University of Worcester, Worcester, UK
6. School of Psychology, Queen’s University, Belfast, Northern Ireland