[1] Univ Utrecht, Div Pharmacoepidemiol & Clin Pharmacol, Utrecht Inst Pharmaceut Sci, POB 80 082, NL-3508 TB Utrecht, Netherlands
[2] Univ Hosp Bonn, Dept Palliat Med, Bonn, Germany
[3] Malteser Hosp Bonn, Ctr Palliat Care, Bonn, Germany
[4] Schutjens Bruin, Tilburg, Netherlands
[5] Willem Scholten Consultancy, Lopik, Netherlands
[6] Univ Lancaster, Div Hlth Res, Int Observ End Life Care, Lancaster, England
[7] Univ Hosp Cologne, Res Unit Eth, Cologne, Germany
[8] Univ Cologne, Cologne Ctr Eth Rights Econ & Social Sci Hlth Cer, Cologne, Germany