www.cdc.gov/mmwr/preview/mmwrhtml/mm5923a1.htm Centers for Disease Control and Prevention EDs are seeing the effects 2 milioni l’anno Drug Abuse Warning Network (DAWN) 2 million per year http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5923a1.htm CDC more than doubled Substance Abuse and Mental Health Services Administration Centers for Disease Control and Prevention Centers for Disease Control and Prevention