Dr. Sidney Wolfe is a senior adviser and co-founder of the Health Research Group, one of Public Citizen’s five policy groups. Public Citizen is a nonprofit public interest group in Washington, D.C. Contact Angela Bradbery, director of communications.

James E. Dittes is a professor emeritus of pastoral counseling at Yale University in New Haven, Conn., and has researched clergy calling. His books include, as author, Re-Calling Ministry (Chalice Press, 1999).

Kyle Roberts is executive director of the Congregational Library in Boston and the author of Evangelical Gotham: Religion and the Making of New York City, 1783-1860.

Kenneth Kaitin is director of the Tufts Center for the Study of Drug Development in Boston.

Scott Ballenger is founder of the Trial Acceleration Institute in Spring House, Pa., which assists stakeholders in speeding up clinical trials.

Frank Palumbo is a professor and director of the Center on Drugs and Public Policy at the University of Maryland School of Pharmacy in Baltimore.

African American Studies and Research Center at Purdue University focuses on African Americans and their connections to the African Diaspora in the Caribbean and Latin America.

Center for Black Women in Church and Society at the Interdenominational Theological Center seeks to enhance the participation and relationship with African American women in church and society.

Center for the Study of African-American Politics at Oxford provides resources on African American society and culture throughout history. Contact through the website.