title: Study design to demonstrate clinical value of preemptive analgesia: is the commonly used approach valid?
authors.forename: Igor
authors.initials: I
authors.lastname: Kissin
mesh_terms: D000698:Analgesia; D000700:Analgesics / Q000627:therapeutic use*; D006801:Humans; D010149:Postoperative Pain / Q000517:prevention & control*; D012107:Research Design
chemical_list: D000700:Analgesics