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.

The Maryland Healthcare Ethics Committee Network, established by the Law and Health Care Program at the University of Maryland School of Law, serves as a resource for ethics committees. Contact chairwoman Diane Hoffman.

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.

Lynn Pasquerella is president of Mount Holyoke College in Massachusetts and has written about medical ethics.  She formerly chaired the University of Rhode Island institutional review board.

Ann Cook is director of the National Rural Bioethics Project, based at the University of Montana in Missoula, where she is a professor of psychology. The project helps address ethics issues in rural communities.

Abdulaziz A. Sachedina is a coordinator of the Islamic bioethics group of the International Association of Bioethics and is a professor of Islamic studies at the University of Virginia in Charlottesville. He contributed the entry on bioethics for The Oxford Dictionary of Islam.

Gilbert Meilaender is a senior research professor at Valparaiso University in Valparaiso, Ind., and a fellow at the Notre Dame Center for Ethics and Culture. He was a member of the President’s Council on Bioethics from 2002 to 2009.

Sister Carol Taylor is former director of the Center for Clinical Bioethics at Georgetown University. She also is a senior research scholar at the Kennedy Institute of Ethics and a professor of nursing at Georgetown. Her background is in philosophy, bioethics and nursing. She is experienced in caring for chronically and critically ill patients and their families.

Catherine Albanese is Professor Emerita in Comparative Religions & Research at the University of California, Santa Barbara and author of Nature Religion in America: From the Algonkian Indians to New Age (University of Chicago Press, 1991) and America: Religions and Religion, 5th. ed. (Belmont, Calif.: Wadsworth, 2012).