1 Copenhagen Trial Unit, Centre for Clinical Intervention Research, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
2 Stolpegaard Psychotherapy Centre, Mental Health Services in the Capital Region of Denmark, Copenhagen, Denmark.
3 Department of Psychology, University of Copenhagen, Copenhagen, Denmark.
4 Department of Regional Health Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark.
5 Department of Neuroanaesthesiology, The Neuroscience Centre, The Neuroscience Centre, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
6 Department of Psychiatry Mental Health Services East, Region Zealand, Roskilde, Denmark.
7 Department of Clinical, Educational, and Health Psychology, University College London, London, UK.