[1] Univ Regensburg, Dept Epidemiol & Prevent Med, Med Sociol, Regensburg, Germany
[2] Univ Hosp Regensburg, Dept Internal Med 3, Regensburg, Germany
[3] Univ Hosp Regensburg, Legal Dept, Regensburg, Germany
[4] Univ Oxford, Ethox Ctr, Nuffield Dept Populat Hlth, Oxford, England
[5] Univ Oxford, Wellcome Ctr Ethics & Humanities, Nuffield Dept Populat Hlth, Oxford, England
[6] Univ Augsburg, Fac Med, Augsburg, Germany
[7] Univ Regensburg, Eth Comm, Regensburg, Germany
[8] Univ Newcastle, Sch Med & Publ Hlth, Newcastle, Australia
[9] Dr Gessler Str 17, D-93055 Regensburg, Germany