1. CoRPS - Center of Research on Psychology in Somatic diseases; Department of Medical and Clinical Psychology; Tilburg University; Tilburg; the Netherlands
2. Department of Internal Medicine; Radboud University Nijmegen Medical Centre; Nijmegen; the Netherlands
3. Department of Internal Medicine; Haaglanden Medical Centre; The Hague; the Netherlands
4. Department of Medical Psychology; VU University Medical Centre; Amsterdam; the Netherlands