Co-author of This Common Secret: My Journey as an Abortion Doctor (2007). Contact through the book’s publisher, Public Affairs.

Bristol Palin is perhaps America’s most famous teen mom. She became a “teen-abstinence ambassador” in 2009 for the Candie’s Foundation, and she appeared in a People magazine cover story in which she confided that a teen mom’s job is hard work.

Ann Stone is the head of Republicans for Choice in Alexandria, Va., which says its aim is to remove politics from the abortion debate.

Gerard Heather is a political science professor at San Francisco State University and an expert on religion and politics.

Steven J. Zipperstein is a professor in Jewish culture and history at Stanford University in Stanford, Calif. He is co-editor of a series of books titled Jewish Lives from Yale University Press. His research areas include modern Jewish history, and he teaches a course on Jews in the modern world.

Eugene Sheppard is an associate professor of modern Jewish history and thought at Brandeis University in Boston and associate director of the Tauber Institute for the Study of European Jewry. He is an expert on the influence of European Jewish refugees on public life and academia in the U.S.

The Rev. John Putka is a Marianist priest and lecturer in political science at the University of Dayton in Ohio. Putka specializes in analyzing Catholic voting patterns and believes abortion is a key issue influencing the Catholic vote.

Posts publications and resources on its Web site, including a list of links. Beth Robbins is media contact.

The Rev. Charles E. Bouchard, O.P., is a moral theologian and president of the Aquinas Institute of Theology, a Dominican graduate school in St. Louis.