1. Institute of Palliative Care (ipac); Jägerstr. 64-66 Oldenburg Germany 26121
2. University Hospital of Cologne; Department of Palliative Medicine; Cologne Germany
3. King's College London; Department of Palliative Care, Policy and Rehabilitation, Cicely Saunders Institute; London UK
4. Cambridge University Hospitals; Department of Palliative Care; Cambridge UK
5. LMU Munich; Department of Palliative Medicine, Munich University Hospital; Marchioninistr. 15 Munich Germany 81377