1. Institute for Healthcare, School of Midwifery, Rotterdam University of Applied Sciences, Rotterdam, The Netherlands
2. Department of Psychiatry, Section Medical Psychology and Psychotherapy, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
3. Faculty of Medicine & Health Sciences, Department of Nursing and Midwifery, University of Antwerp, Antwerp, Belgium
4. Medical Library, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
5. School of Health and Social Care, Edinburgh Napier University, Sighthill Court, UK