Ronald G. Crystal, M.D. is Chief of the Division of Pulmonary and Critical Care Medicine at the Weill Cornell-New York Presbyterian Hospital. On May 15 Dr. Crystal testified in Washington before the House Select Committee on Homeland Security. His testimony was part of a hearing on "Project Bioshield: Countering the Bioterrorist Threat." In addition, Dr. Crystal has served on the editorial boards of 20 medical journals, and published over 600 scientific articles.

P. Andrew Karam, Ph.D. is the University of Rochester's Radiation Safety Officer and an adjunct faculty member in the Environmental Health and Earth and Environmental Sciences departments. Dr. Karam is specifically interested in the threat and effects of a terrorist attack involving radiation. His professional writings include chapters on nuclear or radiological topics in three textbooks. Dr. Karam is also frequently interviewed and asked to speak on radiological issues. He reviewed the guides to be certain the information in this section was both accurate and logical.

Henry I. Miller, M.D. is a fellow at the Hoover Institution at Stanford University, where his research includes a focus on federal and international oversight of various aspects of bioterrorism. Dr. Miller is the author of more than five hundred articles in scholarly and popular publications. He is a regular commentator on ABC radio and writes frequently for such publications as the Financial Times (London), Wall Street Journal and Los Angeles Times.

Gilbert L. Ross, M.D. is Executive Director and Medical Director of the American Council on Science and Health (ACSH). Dr. Ross is also a Diplomate of the American Board of Internal Medicine, certified in Medicine and Rheumatology. Dr. Ross has authored op-eds. and letters published in The Lancet and The New England Journal of Medicine, The New York Times, The Wall Street Journal, and Business Week. He is co-author of articles published in The Journal of Rheumatology, The Journal of Health Communication, Oncology Times and Clinical Therapeutics. He has also appeared on many TV and radio programs, including recent segments on Good Morning America and Fox News.

Marc K. Siegel, M.D. is an expert in infectious diseases is an associate professor at New York University School of Medicine. Dr. Siegel reviewed the accuracy of the medical information pertaining to infectious disease in both the New Yorker's and Citizen's guides. Dr. Siegel is a regular contributor to the New York Times, Los Angeles Times, New York Daily News, and other print media. He has served as a regular medical correspondent for numerous TV and radio programs including, NBC Today Show, CNN, Fox News network, WCTC Talk Radio, WOR, and BBC Morning.

Major General Randall L. West (Retired) is currently the Vice President of Robison International, Inc., Washington, D.C. where he serves as a consultant and adviser primarily on matters of National Security and Policy. In 1992, he was assigned as a legislative fellow, assisting the office of Representative C. W. Bill Young of Florida and the House Appropriations Committee with national security and defense matters. Following this assignment, he became the head of Aviation Plans, Programs, Doctrine, Budget, Congressional and Joint Matters at Headquarters Marine Corps until his promotion to brigadier general on October 1, 1995. From July 1999 - February 2001, General West served as the Senior Advisor for the Deputy Secretary of Defense for Chemical and Biological Protection.