RT Journal Article SR Electronic T1 Opioids, Reward and Addiction: An Encounter of Biology, Psychology, and Medicine JF Pharmacological Reviews JO Pharmacol Rev FD American Society for Pharmacology and Experimental Therapeutics SP 341 OP 396 VO 51 IS 2 A1 van Ree, Jan M. A1 Gerrits, Mirjam A. F. M. A1 Vanderschuren, Louk J. M. J. YR 1999 UL http://pharmrev.aspetjournals.org/content/51/2/341.abstract AB