1. Research Unit of General Practice, Institute of Public Health, Faculty of Health Sciences, University of Southern Denmark, J. B. Winsløwsvej 9A, 5000 Odense C, Denmark
2. Forschungsstelle Spiritual Care, Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie, Munich School of Philosophy, Kaulbachstraße 31, 80539 Munich, Germany
3. Research Centre Spiritual Care, Department of Psychosomatic Medicine and Psychotherapy, The University Hospital Klinikum rechts der Isar, Langerstraße 3, 81675 Munich, Germany
4. Hospice Care DaSein, Karlstraße 55, 80333 Munich, Germany
5. Department of Transplantation and Cardiology, Skåne University Hospital, 221 85 Lund, Sweden
6. Department of Health Sciences, Lund University, P.O. Box 157, 221 00 Lund, Sweden
7. Institute of Integrative Medicine, Faculty of Medicine, Witten/Herdecke University, Herdecke, Gerhard-Kienle-Weg 4, 58313 Herdecke, Germany