title: Influence of depression symptoms on serum tumor necrosis factor-α of patients with chronic low back pain.
authors.affiliation: Department of Orthopaedic Surgery, University of Heidelberg, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany. haili.wang@med.uni-heidelberg.de
authors.forename: Haili
authors.initials: H
authors.lastname: Wang
authors.forename: Carsten
authors.initials: C
authors.lastname: Ahrens
authors.forename: Winfried
authors.initials: W
authors.lastname: Rief
authors.forename: Simone
authors.initials: S
authors.lastname: Gantz
authors.forename: Marcus
authors.initials: M
authors.lastname: Schiltenwolf
authors.forename: Wiltrud
authors.initials: W
authors.lastname: Richter