Most children hate being fitted with new shoesunless they are taken to a store where they can look at their toes in an X-ray fitting machine. Then it's fun. But last week, in the New England Journal of Medicine, Dr. Charles R. Williams of the Harvard School of Public Health warned about the harm that this type of fun might cause, through overexposure to X rays.
Typical machines in shoe stores, Dr. Williams found, deliver from five to 58 times the maximum dose considered safe by the American Standards Association and the New York...
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