Stephen Barrett, M.D., a retired psychiatrist, is a nationally renowned author, editor, and consumer advocate. He has been collecting information about chiropractic for more than twenty-five years. He is a board member of the National Council Against Health Fraud and chairs its Task Force on Victim Redress. His thirty-eight books include The Health Robbers: A Close Look at Quackery in America; The Vitamin Pushers: How the "Health Food" Industry ls Selling America a Bill of Goods; Reader's Guide to "Alternative" Health Methods; and four editions of the college textbook Consumer Health: A Guide to Intelligent Decisions. Ronald E. Gots, MD, PhD, is affiliated with the International Center for Toxicology and Medicine. Since 1975, he has devoted his professional activities to solving clients' problems in environmental medicine, toxicology, causation analysis, and risk communication. Dr. Gots has chaired two international symposia on "Multiple Chemical Sensitivities: the State of The Science." He sat on a committee convened by the International Programme on Chemical Safety (UNEP-ILO-WHO) to evaluate the "chemical sensitivity" issue (Berlin, Germany, February 1996). He is the author of six books, chapters in six books, and more than seventy articles on biochemistry, toxicology, mold, and mold toxins in insurance and legal literature. His most recent books are Chemical Sensitivity: The Truth About Environmental Illness and Keeping Buildings Healthy.