Paul R. Dekar is Professor Emeritus of Evangelism and Mission at the Memphis Theological Seminary in Memphis, Tenn. He wrote the article “The Inspiration of Martin Luther King Jr. for Nonviolent Justice Seekers in Latin America and the Caribbean” for the Memphis Theological Seminary Journal (1997).

The Rev. Daisy Machado is Dean of Academic Affairs and Professor of Church History at Union Theological Seminary, New York. She has written about Latina feminist theology, the border, immigrant issues and globalization.

Anne Griswold Peirce is a professor of nursing at Adelphi University in Garden City, N.Y. She published the paper “Some Considerations about Decisions and Decision-Makers in Hospital Ethics Committees” in the Oct. 14, 2004, issue of the Online Journal of Health Ethics.

Douglas Meeks, Cal Turner Chancellor professor of theology and Wesleyan studies at Vanderbilt University Divinity School in Nashville, Tenn., has written about the economy and the future of liberation theology in North America.

Dr. John Collins Harvey, a physician with a doctorate in theology, is senior research scholar and professor emeritus of medicine of the Georgetown University Center for Clinical Bioethics in Washington, D.C. His bioethics interests include withdrawal of treatment, advance directives, euthanasia and physician-assisted suicide. Contact him via the website.

Dr. Michael A. Williams is medical director of the LifeBridge Health Brain & Spine Institute in Baltimore. He is former co-chairman of the Johns Hopkins Hospital Ethics Committee. His interest areas include end-of-life care and the ethical issues of organ donation, of intracranial pressure and of hydrocephalus.

Dennis McCann, Professor Emeritus of Bible and Religion at Agnes Scott College in Decatur, Ga., has written about liberation theology and business ethics.

Dr. Robert M. Arnold is director at the University of Pittsburgh School of Medicine’s Institute for Doctor-Patient Communication. Arnold teaches physician leaders how to educate peers to better communicate regarding ethical, psychosocial and existential issues at the end of life.

Dr. Alexandra Cist, board-certified in internal medicine, pulmonary medicine and critical care medicine, is on staff at Massachusetts General Hospital, where she serves on the ethics task force and other ethics committees.