Jonathan Gruber is an economics professor at Massachusetts Institute of Technology in Boston. He advised the Obama campaign in 2008 about health care, and The Washington Post has called him the Democratic Party’s most influential health care expert. He has testified before the Senate Finance Committee about financing health care reform.

David Cutler is an economics professor at Harvard University. He wrote the book Your Money or Your Life: Strong Medicine for America’s Healthcare System, which looks at issues involving access to health care.

Stuart Altman is the Sol C. Chaikin Professor of National Health Policy at the Heller School for Social Policy and Management at Brandeis University in Waltham, Mass. He is an economist whose research interests are primarily in federal and state health policy.

The U.S. Census Bureau provides data on the uninsured, including breakdowns by age, race, sex and state.

The State Health Access Data Assistance Center at the University of Minnesota provides information and analysis about health insurance coverage with state-by-state profiles.

Read an analysis by Drew Altman, president and CEO of the Henry J. Kaiser Family Foundation, about differences in public and expert perceptions of the current American health care system.

Read an analysis a July poll registers both support for and doubts about health care reform as debate intensifies. The poll was conducted by the Henry J. Kaiser Family Foundation, which specializes in health care issues. A main focus of the foundation is  health reform. Drew Altman is president and CEO.

The Universal Health Care Action Network is an education and advocacy group working to provide comprehensive health care for all Americans. Its comprehensive Web site links to other health care reform campaigns, including Faithful Reform in Health Care. Rachel DeGolia is executive director.

PICO National Network is a network of faith-based community organizations. It was one of the leaders of the 40 Days for Health Reform campaign. Gordon Whitman is director of public policy and communications. Contact 866-550-7426 ext. 713.