The Catholic Medical Association opposes assisted suicide. Mario Dickerson, who has a background in theology and philosophy, is executive director.

Richard Norman is a professor emeritus of moral philosophy at the University of Kent. He is the author of On Humanism (Routledge, 2004) and a founding member of Humanist Philosophers Group.

Euthanasia.com, which opposes euthanasia and physician-assisted suicide, posts links to numerous religious leaders’ and organizations’ statements on the issue.

ReligiousTolerance.org has a page of resources on euthanasia and physician-assisted suicide, including information on various faith groups’ positions.

Read about legal and ethical issues in dying, posted by the American Geriatrics Society Foundation for Health in Aging.

Peter Millican is the Gilbert Ryle Fellow and Professor of Philosophy at Hertford College, Oxford University. His research focuses on the life and work of Scottish philosopher David Hume,philosophy’s connections to politics, society, religion and science and the creationism versus evolution debate. He is a member of the Humanist Philosophers Group.

The nonprofit ProCon.org posts a state-by-state guide to laws about physician-assisted suicide.

The New York Times tracks the subject  of assisted suicide with a Times Topics page.

Read a Feb. 11, 2011, column by physician Kenneth R. Stevens questioning Oregon’s 2010 annual report about usage of its assisted-suicide law. The op-ed was published by The Oregonian.