1. Department of Internal Medicine; Catharina Hospital; Eindhoven The Netherlands
2. National Institute for Public Health and the Environment; Centre for Infectious Disease Control; Bilthoven The Netherlands
3. University Medical Center Utrecht; Cancer Center; Utrecht The Netherlands
4. Department of Applied Psychology; Maastricht University; Maastricht The Netherlands
5. Department of Interdisciplinary Social Science; Faculty of Social and Behavioural Sciences; Utrecht University; Utrecht The Netherlands