title: The placebo effect and endogenous opioids.
authors.forename: L
authors.initials: L
authors.lastname: Sher
mesh_terms: D004723:Endorphins / Q000037:antagonists & inhibitors / Q000266:history; D049673:History, 20th Century; D006801:Humans; D009270:Naloxone / Q000266:history* / Q000627:therapeutic use; D009292:Narcotic Antagonists / Q000266:history* / Q000627:therapeutic use; D010149:Postoperative Pain / Q000266:history* / Q000517:prevention & control; D015990:Placebo Effect; D014081:Tooth Extraction / Q000266:history
chemical_list: D004723:Endorphins; D009292:Narcotic Antagonists; D009270:Naloxone