1. CAPHRI School for Public Health and Primary Care, University of Maastricht, Maastricht, The Netherlands;
2. Faculty of Medicine and Health Sciences, Department of Primary and Interdisciplinary Care, University of Antwerp, Antwerp, Belgium;
3. General practice, Heeg, the Netherlands;
4. Department of Work and Social Psychology, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands