1. Quality of Life, Spirituality and Coping, Institute of Integrative Medicine, Witten/Herdecke University, 58313 Herdecke, Germany
2. Freiburg Institute for Advanced Studies (FRIAS), Universität Freiburg, 79098 Freiburg, Germany
3. Department of Neurology, Communal Hospital Herdecke, 58313 Herdecke, Germany
4. Department of Neurology and Palliative Care, Köln-Merheim Hospital, 51109 Cologne, Germany
5. Neurological Hospital, Clinic of Lüdenscheid, 58515 Lüdenscheid, Germany
6. Augusta Hospital Anholt, Neurological Hospital, 46419 Isselburg, Germany
7. Caritas Science and Christian Social Work, Faculty of Theology, Albert-Ludwigs University, 79104 Freiburg, Germany
8. Institute of Integrative Medicine, Witten/Herdecke University, 58313 Herdecke, Germany