Prevalence of long-term opioid therapy in spine center outpatients the spinal pain opioid cohort (SPOC).
Claus MannicheLonny StokholmSophie L RavnTonny A AndersenLars BrandtKatrine H RubinBerit Schiøttz-ChristensenLars L AndersenSøren G SkousgaardPublished in: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society (2021)
Diagnostic: individual cross-sectional studies with consistently applied reference standard and blinding.