title: The use of opioids in treatment of chronic pain: an examination of the ongoing controversy.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Northwestern University Medical School. Center for Pain Studies, Rehabilitation Institute of Chicago.
authors.forename: R N
authors.initials: RN
authors.lastname: Harden
authors.affiliation: Department of Physical Medicine and Rehabilitation, Northwestern University Medical School. Center for Pain Studies, Rehabilitation Institute of Chicago.
authors.forename: S
authors.initials: S
authors.lastname: Bruehl
authors.affiliation: Department of Neurology, University of Wisconsin-Madison Medical School, 600 Highland Avenue, Madison, WI 53792-5132, USA.
authors.forename: M M
authors.initials: MM
authors.lastname: Backonja