title: Epidural steroid injections for chronic back pain: piecing the puzzle together.
authors.affiliation: Department of Surgery, Walter Reed National Military Medical Center, Bethesda, MD, USA; 550 North Broadway, Suite 301, Baltimore, MD 21029, USA.
authors.forename: Indy M
authors.initials: IM
authors.lastname: Wilkinson
authors.forename: Steven P
authors.initials: SP
authors.lastname: Cohen