PT - JOURNAL ARTICLE AU - Roland R. Griffiths AU - Richard M. Wurster AU - Joseph V. Brady TI - Discrete-Trial Choice Procedure: Effects of Naloxone and Methadone on Choice between Food and Heroin DP - 1975 Sep 01 TA - Pharmacological Reviews PG - 357--365 VI - 27 IP - 3 4099 - http://pharmrev.aspetjournals.org/content/27/3/357.short 4100 - http://pharmrev.aspetjournals.org/content/27/3/357.full SO - Pharmacol Rev1975 Sep 01; 27