1. Triversum Centre for Child and Adolescent Psychiatry; Alkmaar
2. Mental Health Nursing Research Group; Inholland University of Applied Sciences; Amsterdam
3. Rintveld Centre for Eating Disorders; Altrecht Institute for Mental Health Care; Zeist
4. Department of Nursing Science, Programme in Clinical Health Sciences; University Medical Center; Utrecht
5. Department of Rehabilitation, Nursing Science and Sport; University Medical Center; Utrecht
6. Department of Social Sciences; University Medical Center; Utrecht
7. Parnassia Psychiatric Institute; The Hague the Netherlands