<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Lin Lu</style></author><author><style face="normal" font="default" size="100%">Jack D. Shepard</style></author><author><style face="normal" font="default" size="100%">F. Scott Hall</style></author><author><style face="normal" font="default" size="100%">Yavin Shaham</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effect of environmental stressors on opiate and psychostimulant reinforcement, reinstatement and discrimination in rats: A review</style></title><secondary-title><style face="normal" font="default" size="100%">Neuroscience and Biobehavioral Reviews</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/14505687</style></url></web-urls></urls><pages><style face="normal" font="default" size="100%">457-491</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">5</style></issue><custom7><style face="normal" font="default" size="100%">000185693700004</style></custom7></record></records></xml>