RT Journal Article SR Electronic T1 The presence of an inhibitor of ethylmorphine N-demethylase in old ethylmorphine. JF Drug Metabolism and Disposition JO Drug Metab Dispos FD American Society for Pharmacology and Experimental Therapeutics SP 275 OP 276 VO 10 IS 3 A1 P H Duquette A1 J L Holtzman YR 1982 UL http://dmd.aspetjournals.org/content/10/3/275.abstract AB