William Shaw received a PhD in biochemistry, genetics, and human physiology from the Medical University of South Carolina and is board-certified in the fields of clinical chemistry and toxicology. He supervised testing at the Centers for Disease Control and Prevention and SmithKline Beecham Clinical Laboratories. He was Director of Clinical Chemistry, Endocrinology, and Toxicology at Children’s Mercy Hospital, the teaching hospital of the University of Missouri at Kansas City School of Medicine. He is now the director of The Great Plains Laboratory in Lenexa, Kansas, that offers worldwide testing for abnormal metabolic diseases and for metal and nonmetal toxic chemicals, metabolites from yeast and bacteria, opiate peptides from wheat and milk, mycotoxins, and food allergies. Many of these are important in autism and PDD. Dr. Shaw has published two books on autism treatments: Biological Treatments for Autism and PDD. What’s going on? What can you do about it? and Autism: Beyond the Basics. He estimates that his laboratory has tested samples of more than 100,000 people with autism in most of the countries in the world and has presented seminars to parents and physicians on the causes and treatments of autism throughout the world.