Elisabeth Guthrie, M.D., is Clinical Director of the Learning Diagnostic Center at Blythedale Children's Hospital in Valhalla, New York. The mother of three children, she lives in Riverdale, New York. Kathy Matthews is the bestselling author of numerous books, including The SavvyMom's Guide to Medical Care," " which she coauthored with Dr. Pam Gallin. The mother of two sons, she lives in Pelham, New York. "From the Hardcover edition."