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The Dutch Lower Extremity Functional Scale was highly reliable, valid and responsive in individuals with hip/knee osteoarthritis: a validation study

Thomas J Hoogeboom*, Rob A de Bie, Alfons A den Broeder and Cornelia HM van den Ende

BMC Musculoskeletal Disorders 2012, 13:117  doi:10.1186/1471-2474-13-117