1. Faculty of Health Care, Research Centre Autonomy and Participation of Chronically Ill People, Zuyd University of Applied Sciences, Heerlen, The Netherlands
2. Faculty of Health, Medicine and Life Sciences, Department of Family Medicine and Department of Health Service Research, Maastricht University, Maastricht, The Netherlands
3. Faculty of Health Care, Research Centre for Midwifery Science, Zuyd University of Applied Sciences, Maastricht, The Netherlands