Affiliation: | 1.Management of Noncommunicable Diseases,World Health Organization,Geneva,Switzerland;2.Duke of Cornwall Rheumatology Department,Royal Cornwall Hospital,Truro,UK;3.Department of Orthopaedic Surgery,Malm? University Hospital,Malm?,Sweden;4.Department of Rheumatology,University Hospital of Rotterdam,The Netherlands;5.Epidemiology Research Unit,University of Manchester,UK |