1. III. Department of Medicine, Interdisciplinary Department of Palliative Care, University Medical Center, Johannes Gutenberg University of Mainz, Mainz, Germany
2. Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, Germany
3. King’s College London, Cicely Saunders Institute, Florence Nightingale Faculty of Nursing, Midwifery & Palliative Care, London, UK