U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES / Division of Toxicology and Environmental Medicine ToxFAQsTM / ATSDR Information Center / Division of Toxicology / Reference Agency for Toxic Substances and Disease Registry / federal government / Public Health Service Agency for Toxic Substances / Agency for Toxic Substances and Disease Registry / Occupational Safety and Health Administration / Poison Control Center / Environmental Protection Agency / International Agency for Research / / /