Bethesda, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health ; Washington : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975
Sponsored by the National Institute of Child Health and Human Development, the National Institute of Dental Research, and the John E. Fogarty International Center for Advanced Study in the Health Sciences.