Prevalence of spina bifida at birth - United States, 1983-1990: A comparison of two surveillance systems

Joseph M. Lary, Larry D. Edmonds, T. Flood, M. Brewster, J. Harris, S. Keefer, R. Merz, H. Howe, D. Krishnamurti, S. Panny, J. Bakewell, M. Seeland, P. Costa, C. Olsen, R. Meyer, L. Ploughman, C. Hill