The concept of harm reduction / James A. Inciardi and Lana D. Harrison -- Harm reduction: history, definition and practice / Diane Riley and Pat O'Hare -- From morphine to methadone: maintenance drugs in the treatment of opiate addiction / Ernest Drucker -- The coming of age of needle exchange / Sandra D. Lane, Peter Lurie, Benjamin Bowser, Jim Kahn, and Donna Chen -- The medicalization of marijuana / Lana D. Harrison -- Pregnancy, drugs, and harm reduction / Marsha Rosenbaum and Katherine Irwin -- Coffeeshops, low threshold methadone, and needle exchange / Dirk J. Korf and Ernst C. Buning -- The harm reduction movement in Brazil: issues and experiences / Hilary l. Surratt and Paulo R. Telles -- The harm minimization option for cannabis: history and prospects in Canadian drug policy / Patricia G. Erickson -- Harm reduction in Australia: politics, policy and public opinion / Toni Makkai -- The harm reduction roles of the American criminal justice system / James A. Inciardi