First Annual Symposium on Environmental Epidemiology.

This is the first of a series of annual symposia planned by the Center for Environmental Epidemiology of the University of Pittsburgh. The Center is under the sponsorship of the U. S. Environmental Protection Agency, and it is appropriate that this first symposium will address the issue of epidemiologic studies as a scientific basis for environmental policy-making. The value of studies carried out on human populations in defining risks to the public health has become recognized, particularly in the last decade or so, and methods being employed to improve these studies are evolving rapidly. A number of the papers address these new method-