prepared by Life Systems, Inc., under subcontract to Clement International Corporation, under contract no. 205-88-0608 ; prepared for U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry
prepared by Syracuse Research Corporation under contract no. 205-1999-00024 ; prepared for U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry