John W. Sparks, M.D., is associate professor in the Department of Pediatrics at the University of Colorado. A neonatologist, he has served as director of Newborn Services and medical director of the Neonatal Intensive Care Unit at University Hospital, Denver. His scientific interests include the physiology, metabolism, and nutrition of the fetus and newborn.
Mervyn Susser, M.B., B.Ch., D.P.H., is Sergievsky Professor of Epidemiology and founder and director of the Sergievsky Center at Columbia University in New York. The Center is endowed for the study of the epidemiology of neurodevelopmental disorders. He has also been head of epidemiology in the Columbia University School of Public Health. His work covers several specific fields, including prenatal development and prenatal nutrition, as well as such general topics as causality and the social sciences in epidemiology.