TY - RPRT TI - Escalation of methamphetamine self-administration in rats: a dose-effect function. AU - Osamu Kitamura AU - Sunmee Wee AU - Sheila E Specio AU - George F Koob AU - Luigi Pulvirenti PY - 2006 DO - 10.1007/s00213-006-0353-z UR - https://pubmed.ncbi.nlm.nih.gov/16552556/ ID - 16552556 ER -