1. Dutch Association for Mindfulness-based Trainers (VMBN), the Netherlands
2. Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, the Netherlands
3. British Association of Mindfulness-based Approaches (BAMBA), UK
4. Centre for Mindfulness Research and Practice (CMRP), School of Human and Behavioural Sciences, Bangor University, Bangor, UK
5. Han Fortmann Centre, Nijmegen, the Netherlands