title: Waddell signs.
authors.forename: Robert
authors.initials: R
authors.lastname: Ferrari
mesh_terms: D002908:Chronic Disease; D006801:Humans; D015588:Observer Variation; D010146:Pain / Q000175:diagnosis*; D059408:Pain Management; D010147:Pain Measurement; D011237:Predictive Value of Tests; D011379:Prognosis; D015203:Reproducibility of Results; D013001:Somatoform Disorders / Q000175:diagnosis* / Q000523:psychology / Q000628:therapy