PT - JOURNAL ARTICLE AU - F C Colpaert TI - System theory of pain and of opiate analgesia: no tolerance to opiates. DP - 1996 Sep 01 TA - Pharmacological Reviews PG - 355--402 VI - 48 IP - 3 4099 - http://pharmrev.aspetjournals.org/content/48/3/355.short 4100 - http://pharmrev.aspetjournals.org/content/48/3/355.full SO - Pharmacol Rev1996 Sep 01; 48