Bethesda, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health, National Institute of Arthritis, Metabolism, and Digestive Diseases, 1980
Bethesda, Md. : U.S. Department of Health and Human Services, Public Health Service, National Institutes of Health, National Institute of Arthritis, Metabolism, and Digestive Diseases, 1981
Rev. Feb. 1981.