[1] Natl Univ Singapore, Ctr Biomed Ethics, Yong Loo Lin Sch Med, Singapore, Singapore
[2] Univ Penn, Perelman Sch Med, Dept Med Ethics & Hlth Policy, Philadelphia, PA 19104 USA
[3] Univ Ghana, Dept Philosophy & Class, Legon, Ghana
[4] Univ Oxford, Oxford, England
[5] Univ Manitoba, Dept Philosophy, Winnipeg, MB, Canada
[6] Univ Denver, Sturm Coll Law, Denver, CO USA
[7] Georgetown Univ, Dept Philosophy, Washington, DC USA
[8] Georgetown Univ, Kennedy Inst Ethics, Washington, DC USA
[9] Pan Amer Hlth Org, Washington, DC USA