The Clinician-Consumer Health Advisory Information Network (CHAIN) is an online educational, informational, and resource dissemination program operated as a collaborative effort of the Centers for Education and Research on Therapeutics (CERTs) Educational Consortium. The Educational Consortium is comprised of representatives from all of the CERTs research centers, the CERTs Coordinating Center, the Agency for Healthcare Research and Quality (AHRQ), and the U.S. Food and Drug Administration (FDA).