Progress in biomedical science has called for an international discussion of the medical, ethical, and legal problems that confront physicians, medical researchers, infertile couples, pregnant women, and parents of premature or disabled infants. In addition, the unprecedented technological developments in obstetrical, perinatal, and neonatal medicine in recent years have indicated a need for an international forum for interdisciplinary dialogue regarding the definition of early human life, the neurological development of early human life, the value of early human life, the obligations for its protection and prolongation, and the limits to these obligations.