title: Editorial--classification systems in clinical practice.
authors.forename: Gwendolen
authors.initials: G
authors.lastname: Jull
mesh_terms: D001416:Back Pain / Q000145:classification* / Q000534:rehabilitation*; D002986:Clinical Trials as Topic / Q000379:methods*; D006801:Humans; D019547:Neck Pain / Q000145:classification* / Q000534:rehabilitation*; D018579:Patient Selection; D015983:Selection Bias