1. Faculty of Psychology, Open University, Heerlen, the Netherlands.
2. Department of Work and Social Psychology, Maastricht University, Maastricht, the Netherlands.
3. Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands.
4. Health Psychology Group, Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, Scotland.
5. Internal Medicine, OLVG Hospital, Amsterdam, the Netherlands.
6. Hello Gorgeous Foundation, Amsterdam, the Netherlands.