title: Rationale and methods for assessment of pain-depressed behavior in preclinical assays of pain and analgesia.
authors.affiliation: Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA. ssnegus@vcu.edu
authors.forename: S Stevens
authors.initials: SS
authors.lastname: Negus
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Bilsky
authors.forename: Gail Pereira
authors.initials: GP
authors.lastname: Do Carmo
authors.forename: Glenn W
authors.initials: GW
authors.lastname: Stevenson