Bioethics December 20, 2016 By Warren Whipple Rebecca L. Walker Till-Holger Borchert (editor) 2005 December 16 Encyclopedia of philosophy : 598-605 MacMillan Full article Filed Under: Tags: Rebecca L. Walker More from UNC Center for Bioethics Center Faculty Featured in the Media October 2025 Anne Lyerly, a member of the World Health Organization working group, contributed to new guidance. ICYMI: Sorting Out Capacity, Competency, and Surrogate Decision-Making: The Fine Line Between Law and Ethics